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Association of Mexican Cave Studies newsletter

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Title:
Association of Mexican Cave Studies newsletter
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Association of Mexican Cave Studies Newsletter (1965-1977)
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Association for Mexican Cave Studies
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Association for Mexican Cave Studies
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Regional Speleology ( local )
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serial ( sobekcm )
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Mexico

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Contents: Trip Reports
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Open Access - Permission by Publisher
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Vol. 1, no. 11 (1965)
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See Extended description for more information.

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K26-00449 ( USFLDC DOI )
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VolumeINumber11THEASSOCIATIONFORMEXICANCAVESTUDIESNEWSLETTERContentsTripReportsNovember 1965VolumeINumber11THEASSOCIATIONFORMEXICANCAVESTUDIESNEWSLETTERContentsTripReportsNovember 1965

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102TripReportsPersons:BobMitchellandJamesReddellDate:June23,1965Destination:MUZquiz,CoahuilaReportedby:JamesReddellBobMitchellandIleftAustinat5:00A.M.enrouteforMUZquizwherewehopedtocollectblindfishfromartesianwellsnearthere.AfterarrivinginM6zquizearlythatnoonwequicklylocatedJackShaw,aminerwhoknewwherethewellswere.HetookustothewellofElPotrero.ThetownofNuevaRositaobtainsitswaterfromthisnaturalwellby pumpingitthroughlargepipesthetenmilesorsotothetown. Alargegrateisplacedoverthewellandanuppernaturalcrawlwayhasbeen cementedovertopreventanimalsfromgoingbackintothecave andpollutingthewater.Adropofabouttenfeetadmitsoneintoa tremendousstreamofwaterrisingfromaindiameterpassage.Thecaretakeratthewelltoldusthatafterrainswaterboilsfromthewell,bearingwithitmanyblindcatfish.Anotherwellabout20feetdeepislocatedhigheronthehillsideandalsohasfishattimes.Thesourceofthewaterinthiswellisprobablythesameasintheotherwell,butthistimeitarisesfroma deepdarkfissureabouttenfeetlongandtwofeetwide.Analgicidehad beenplacedinthewellstokeep themcleanand,therefore,thefishwereobviouslydrivenout.AnightspentintheapartmentofMr.Shawleftusrefreshedfora busy dayofcheckingmineshaftsandwellsforpossiblefishlocalities.WewerefirsttakentoElSocavon, anoldminetunnelwhichintersectedahuge cavestream,causingthedeathofseveralminers.ThewaternowbubblesupoutoftheslopingminetunnelandischannelledintothetownofMUzquiz,whereitservesastheprincipalwatersupplyforthetown.Manyothershaftsandtunnelsarelocatedaroundthetown,butnocavescouldbefound.Onetunnelwasfollowedforabout200feetbeforeitintersecteda deepshaftwhich wouldhaverequiredswimmingtocross.Timebeingveryshortwewerenotabletostaylongerinanattempttolocatecaves,butthetripwasmadeveryinterestingbythehydrologicsituation.ThereturntriptoAustinwasmadewithoutincident.Persons:Orion Knox,TommyMcGarrigle,BillRussell,andCarolWestmoreland Date: November24-28,1965Destination:Area aroundAramberri,N.L. Reported by:BillRussellDuringtheThanksgivingholidaysfourAustincavers,Orion Knox,TommyMcGarrigle,BillRussell,andCarolWestmoreland,leftAustinforthegypsum caveareaaround Aramberrilocatedtothenorth-eastofMatehuala,S.L.P.UnfortunatelycartroublehaultedusinGeneralTeran,andbythetimethecarcould berepairedlittletimewasleft.So,102TripReportsPersons:BobMitchelland JamesReddellDate:June23,1965Destination:MUZquiz,CoahuilaReportedby:JamesReddellBobMitchelland IleftAustinat5:00A.M.enrouteforMUZquizwherewehopedtocollectblindfishfromartesianwellsnearthere.AfterarrivinginM6zquizearlythatnoonwequicklylocatedJackShaw, aminerwhoknewwherethewellswere.HetookustothewellofElPotrero.ThetownofNuevaRositaobtainsitswaterfromthisnaturalwellby pumpingitthroughlargepipesthetenmilesorsotothetown. Alargegrateisplacedoverthewellandanuppernaturalcrawlwayhasbeen cementedovertopreventanimalsfromgoingbackintothecave andpollutingthewater.Adropofabouttenfeetadmitsoneintoa tremendousstreamofwaterrisingfrom aindiameterpassage.Thecaretakeratthewelltoldusthatafterrainswaterboilsfromthewell,bearingwithitmanyblindcatfish.Anotherwellabout20feetdeepislocatedhigheronthehillsideandalsohasfishattimes.Thesourceofthewaterinthiswellisprobablythesameasintheotherwell,butthistimeitarisesfrom a deepdarkfissureabouttenfeetlongand twofeetwide.Analgicidehad beenplacedinthewellstokeep themcleanand,therefore,thefishwereobviouslydrivenout.AnightspentintheapartmentofMr.Shawleftusrefreshedfora busy dayofcheckingmineshaftsandwellsforpossiblefishlocalities.WewerefirsttakentoElSocavon, anoldminetunnelwhichintersecteda huge cavestream,causingthedeathofseveralminers.ThewaternowbubblesupoutoftheslopingminetunnelandischannelledintothetownofMUzquiz, whereitservesastheprincipalwatersupplyforthetown.Manyothershaftsandtunnelsarelocatedaroundthetown,butnocavescouldbefound.Onetunnelwasfollowedforabout200feetbeforeitintersecteda deepshaftwhich would haverequiredswimmingtocross.Timebeingveryshortwewerenotabletostaylongerinanattempttolocatecaves,butthetripwasmadeveryinterestingbythehydrologicsituation.ThereturntriptoAustinwasmadewithoutincident.Persons:Orion Knox,TommyMcGarrigle,BillRussell,andCarolWestmoreland Date: November24-28,1965Destination:Area aroundAramberri,N.L. Reported by:BillRussellDuringtheThanksgivingholidaysfourAustincavers,Orion Knox,TommyMcGarrigle,BillRussell,andCarolWestmoreland,leftAustinforthegypsum caveareaaround Aramberrilocatedtothenorth-eastofMatehuala,S.L.P.UnfortunatelycartroublehaultedusinGeneralTeran,and bythetimethecarcould berepairedlittletimewasleft.So,

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103wefollowedtheroadleadingwestfrom MontemorelosthroughthecanyonoftheRioPilon.CuevadeChorrosdeAguaislocatedinthiscanyon andotherentrancescanbeseenhighonthemountains.AnoldloggingroadleadsfromjustwestoftheshrinebelowtheentrancetoCuevadeChorrosdeAguaintoahighkarstareaabout2000feetabovetheriver.Only afewsmallcaveswere foundinthisareainthesmallamountoftimewehadavailable.OrionreachedthetopofCierrodelaBoca, aprominentlimestonepeak.Persons:JimDuke,JesseandDorthyPurefoy,LannyandSharonWiggins,CharlesYaleDate:November24-28,1965Destination:Zaragoza,N.L.(seemap)Reportedby:JimDukeOnNovember24weleftAustinat8 P.M., headedforZaragoza,N.L.FromthereweplannedtohiketothevillageofEncantada,onthenorthernfringeoftheSierraPena Nevada.ThisVillagewas supposedtobeabout8km.intothemountainsfrom .Zaragoza. (SeetripreportbyD. McKenzie,September,1965,page82.)AfterstopsinMcAllen, Reynosa,Linares,andIturbide,wearrivedatLaEscondidaat4P.M.onNovember25.Theroadtothispointwaspaved,butfrequentstopswerereqUiredbecauseoftheover-heatingofmycarduetothemountainousterrain.FromEscondida,itis24milestoZaragozabydirtroad,throughAramberri.Thisroadtakes3hourstodrive.WearrivedatZaragozaat7P.M.,rentedtwo roomsatthehotel(RafaelReyna,prop.)and wenttosleep,leaVingwordtobeawakenedearly.Afterbreakfastandfinalpreparationsweweredirectedtothetrail,andbeganourtrekintothemountains.(Atvariousperiodsduringtheentiretrip,Irecordedelevationsofparticularpointsofinterest.Thesearelistedinthetableattheendofthereport.)TheentiretriptoEncantadatooksevenhours(includingone-halfhourforlunchbreak),andwearrivedatdusk.Imightinsertatthispointthatwewereofferedburrosforthetripattherateoffivepesosperburro.Werefused,butthislaterprovedtobeamistake.AnyonetravelinginthiscountryshouldinquireinZaragozaandrentburrosforthetripup.Thetrip,aswelearnedthehardway,wasmorelike16km.,withanelevationchangeofabout4000feet.WespentthenightintheEncantadaschoolhouse,aftermakingpreparationsforrentinghorsestotraveltosomeofthecavesthenextday.OnSaturday,the27th,fourofus:Lanny,Sharon,CharlesandIleftthevillageonhorsebacktoseethecaves.JesseandDorthywentbacktoZaragozatoprepareforthetripbacktoAustin(sleep).Aftercheckingoutonesmallpit,wearrivedataplateaufilledwithsmallsinks,ofwhichthreelookedpromising.Thefirstwasatwelvefoot103wefollowedtheroadleadingwestfrom MontemorelosthroughthecanyonoftheRioPilon.Cueva deChorrosdeAguaislocatedinthiscanyon andotherentrancescanbeseenhighonthemountains.AnoldloggingroadleadsfromjustwestoftheshrinebelowtheentrancetoCueva deChorrosdeAguaintoahighkarstareaabout2000feetabovetheriver.Only a fewsmallcaveswere foundinthisareainthesmallamountoftimewehadavailable.OrionreachedthetopofCierrodelaBoca, aprominentlimestonepeak.Persons:Jim Duke,JesseandDorthyPurefoy,Lanny andSharonWiggins,CharlesYaleDate:November24-28,1965Destination:Zaragoza,N.L.(seemap)Reportedby:JimDukeOnNovember24weleftAustinat8 P.M., headedforZaragoza,N.L.FromthereweplannedtohiketothevillageofEncantada,onthenorthernfringeoftheSierraPena Nevada.ThisVillagewas supposedtobeabout8km.intothemountainsfrom .Zaragoza. (SeetripreportbyD.McKenzie,September,1965,page82.)AfterstopsinMcAllen, Reynosa,Linares,andIturbide,wearrivedatLaEscondidaat4P.M.on November25.Theroadtothispointwaspaved,butfrequentstopswerereqUiredbecauseoftheover-heatingofmycarduetothemountainousterrain.FromEscondida,itis24milestoZaragozabydirtroad,throughAramberri.Thisroadtakes3hourstodrive.WearrivedatZaragozaat7P.M.,rentedtwo roomsatthehotel(RafaelReyna,prop.)and wenttosleep,leaVingwordtobeawakenedearly.Afterbreakfastandfinalpreparationsweweredirectedtothetrail,andbeganourtrekintothemountains.(Atvariousperiodsduringtheentiretrip,Irecordedelevationsofparticularpointsofinterest.Thesearelistedinthetableattheendofthereport.)TheentiretriptoEncantadatooksevenhours(includingone-halfhourforlunchbreak),andwearrivedatdusk.Imightinsertatthispointthatwewereofferedburrosforthetripattherateoffivepesosperburro.Werefused,butthislaterprovedtobeamistake.AnyonetravelinginthiscountryshouldinquireinZaragozaandrentburrosforthetripup.Thetrip,aswelearnedthehardway, was morelike16km.,withanelevationchangeofabout4000feet.WespentthenightintheEncantadaschoolhouse,aftermakingpreparationsforrentinghorsestotraveltosomeofthecavesthenextday.OnSaturday,the27th,fourofus:Lanny,Sharon,Charlesand Ileftthevillageonhorsebacktoseethecaves.JesseandDorthywentbacktoZaragozatoprepareforthetripbacktoAustin(sleep).Aftercheckingoutonesmallpit,wearrivedataplateaufilledwithsmallsinks,ofwhichthreelookedpromising.Thefirstwas atwelvefoot

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-/"---1--"RIOBLANCO680.-ZARAGOZA--610,100610,10061180SANROBERTO......68210610 ,800LEGENDCityorTown0PavedRoads,.,.,DirtRoods-...... Trail.-PeakElevation6River..........'-.....TypicalEIeGtlon0-/"---1--"RIOBLANCO680.-ZARAGOZA--610,100610,10061180SANROBERTO......68210LEGEND610,800City orTown0PavedRoads,.,.,DirtRoods-...... Trail.-PeakElevation6River..........'-.....TypicalEIeGtlon0

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(Note:104climbabledropintoahorizontalcrawl.Thiswasnotchecked anyfurther.The second wastwoten-footdrops,offsetaboutthreefeet.Fromhereacrevice,withadipotroughly75degrees,leddeeper.Itrequiredequipment andwasrathernarrow,theretorewasnotchecked.Thethirdpitwasabout130feetdeep,andconsistedofaseriesofsmalldrops.Itendedatasmallnon-negot1ablecrawlway,justaboveamudplugatthebottom.Thiscave wasnamedSumiderodelMoscas.Thisisprobablya misnomer,sincetheinsects,which wereinallthecavesvisited,appearedtobemorelikemothsthanflies.Afterexploringthisthirdpit,wereturnedtothevillage.Weweregonesixhours,spendingaboutfourhoursonhorsebackgoingtoandfromthecavearea.Thisleadsustoestimatetheareatobeaboutfivekm.fromthevillage.WelefttorZaragozaatabouttwothatafternoon,carryingourpacks,andarrivedat5:30,afterathreeandone-halfhourtripdownthatwasmucheasierthanthetripup.Weimmediately packedthecar,atealightsupperatthehotel,and beganourtripback.WestoppedinAramberritobuygas,thendrove ontothebaseofthemountainsoutsideofLinareswherewestoppedtosleep.Thenextmorning (Nov.28)weleftthecampsiteat8A.M.and drovetoAustin,arrivingthereat8P.M.ElevationsofPointsofInterestElevationsaremeasuredinfeetandaccuratetowithin200feet)TopofridgebetweenIturbideand Galeana5500 ToporridgenorthofAscension7500 La Escondidao5500 Aramberri3500 Zaragoza4300Pass(significant)ontrailtoEncantada7700Encantada8300Plateauwithcaves9300Persons:EdAlexander,DonEricson,David McKenZie, RichardM.Smith, MerydithTurnerDate:November24-29,1965Destination:s6tanodelaTinajajElAbra Range,VallesS.L.P.Reported by:EdAlexander andDavid McKenzie WithEd'sLand Roverfilledtocapacity,weleftAustinWednesdayafternoonbeforeThanksgiving,soontobefollowedbythedelArroyo groupwhomweplannedtomeetinValles.Ourambitionwastoexploreandsurveythe"uJrstream"passageins6tanodelaTinajaandtoperhapsdi&coverasuspectedlinkagewiththetwokilometerdistants6tanodelArroyo.The amassmentotessentialgearincludedourlargepacks,ropeandladders,innertubes,anda 30feettelescopingantennatobe usedasascalingpole.(Note:104climbabledropintoahorizontalcrawl.Thiswasnotchecked anyfurther.Thesecondwastwoten-footdrops,offsetaboutthreefeet.Fromhereacrevice,withadipotroughly75degrees,leddeeper.Itrequiredequipment andwasrathernarrow,theretorewasnotchecked.Thethirdpitwasabout130feetdeep,andconsistedofaseriesofsmalldrops.Itendedatasmallnon-negot1ablecrawlway,justabove amudplugatthebottom.ThiscavewasnamedSumiderodelMoscas.Thisisprobablya misnomer,sincetheinsects,which wereinallthecavesvisited,appearedtobe morelikemothsthanflies.Afterexploringthisthirdpit,wereturnedtothevillage.Wewere gonesixhours,spendingaboutfourhoursonhorsebackgoingtoand fromthecavearea.Thisleadsustoestimatetheareatobeaboutfivekm.fromthevillage.WelefttorZaragozaatabouttwothatafternoon,carryingourpacks,andarrivedat5:30,afterathreeandone-halfhourtripdownthatwasmucheasierthanthetripup.Weimmediately packedthecar,atealightsupperatthehotel,and beganourtripback.WestoppedinAramberritobuygas,thendrove ontothebaseofthemountainsoutsideofLinareswherewestoppedtosleep.Thenextmorning (Nov. 28)weleftthecampsiteat8A.M.and drovetoAustin,arrivingthereat8P.M.ElevationsofPointsofInterestElevationsaremeasuredinfeetandaccuratetowithin200feet)TopofridgebetweenIturbideand Galeana5500ToporridgenorthofAscension7500LaEscondidao5500 Aramberri3500 Zaragoza4300Pass(significant)ontrailtoEncantada7700Encantada8300Plateauwithcaves9300Persons:EdAlexander,DonEricson,David McKenZie, RichardM.Smith, MerydithTurnerDate:November24-29,1965Destination:s6tanodelaTinajajElAbra Range,VallesS.L.P.Reported by:EdAlexander and David McKenzie WithEd'sLandRoverfilledtocapacity,weleftAustinWednesdayafternoonbeforeThanksgiving,soontobefollowedbythedelArroyo groupwhomweplannedtomeetinValles.Ourambitionwastoexploreandsurveythe"uJrstream"passageins6tanodelaTinajaandtoperhapsdi&coverasuspectedlinkagewiththetwokilometerdistants6tanodelArroyo.Theamassmentotessentialgearincludedourlargepacks,ropeandladders,innertubes,and a 30feettelescopingantennatobe usedasascalingpole.

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VillageotLosSa binoslocatedJustn orthotCd.Valles,S .L.P.andnearSotanodelArr oyo andScS'tanodelaTinaJa-photob yMillsT andyVallede Zaragosa,locatedapproximatelyt enmileseastotBncantada photo by OrionboxVillageotLos SabinoslocatedJustnorthotCd.Valles,S.L.P.andnearSotanodelArroyo and Sd'tano delaTinaJa-photobyMillsTandyVallede Zaragosa,locatedapproximatelytenmileseastofBncantada-photo by Orionbox

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105TheinitialgroupottourarrivedinVallesataboutdawnThursdayatterdrivingmostotthenightthroughdensefog.Soon,afterashortnapintheRover,wewerejoinedby JohnFish'scarfromAustin,which wasboundtorS&tanodelArroyo, and MerydithTurnerwhohad precededusbyacoupleotda"ysbybus.Afterashortbreakfastandmanycupsofcafeconleche,weobtainedper.missiontoworkintheLosSabinosareafromtheownerofs6tanodelaTinaja,SenorLuisMart!nez.Readynowtoenterthecaves,thetwogroupsdrovenorthtoLosSabinoswherethesixcaverswithFishpreparedtoenters6tanodelArroyo(seelocationmapinAMeSNewsletterVol.I,No.3andfollowingreportinthisissue).FromtheretheLandRovercontinuedontos6tanodelaTinaja,where,withhighhopes,thegearwasarrangedandweenteredthecaveataboutnoon.Sincetheplanscalledforspendingthenexttwo days deepwithinthesystem mappingthe"sandy-flooredpassage",wepackedoursupplies4000teettotheupstreamsectionwhere acampwasestablished.Sincethetripintothecave had beenquitetiring(noneotthegroup hadsleptthenightbetore),werestedforaboutanhourwhileeatingsupper,beforebeginningthesurvey.Atabout6webacktrackedtothecableladderdropattheendofthe1400'entrancepassageandsetupthefirststation.WithDavidsketching,EdontheBrunton,andDonand Richardrunningthe100'steeltape,themappingwentswiftlyasweprogressedback towardthecamp.Sixhourslaterthelaststationofthedaywasmadenexttooursleepingbags,bringingthetotallengthofmappedpassageforthedayto3300teet.Thisdistanceincludedthemain"sandy-floored"passagefromthecableladderdroptocampithefirstseotionofthedownstreampassage,asfarasthefirstdrop;andthe300feetofpassageleadingtotheunexploredpitnearthecableladder.Fridaymorningaftertheusualcannedbreakfast,themappingwascontinuedintheupstreamdirectionawayfrom camp.Weplannedtopushthispassageuntilitendedorshowedsignsofconnectingwiththes6tanodelArroyosystem, which,atthetimeseemedquitepossible.Themappingprogressedquitewellthroughthedaydespitetheinconvenienceofcarryingthe30'scalingpole,telescopedintoonesectiontenfeetl.ng.Sincethispassagehasalreadybeenwelldescribed(Vol.I,PP.29and46),sufficeittosaythatmanyhourslaterwearrivedattheendottheexploredsectionwhere15teetourheads wasthesmallpassageforwhichwehadbroughttheunwieldypole.Attirstglancetheleaddidn'tlooktoopromising,butneverthelessthepolewaserectedwithacableladdertiedtothetop,andEdandDavidascended.The5'x5'passagequicklypincheddowntowhatseemedtobeanimpassiblesqueeze.AttermuchpainandeffortEdfinallymanagedtoemergeontheothersideinasmallroom,Which,after15feet,againnarroweddowntoatightcrawl.Fiftyfeetfurther,hecouldseeasizeableroomjustontheothersideofanotherverytighthole.Withvisionsofthesought105TheinitialgroupottourarrivedinVallesataboutdawnThursdayatterdrivingmostotthenightthroughdensefog.Soon,afterashortnapintheRover,wewerejoinedby JohnFish'scarfromAustin,whichwasboundtorS&tanodelArroyo, and MerydithTurnerwhohad precededusby acoupleotda"ysbybus.Afterashortbreakfastandmanycupsofcafeconleche,weobtainedper.missiontoworkintheLosSabinosareafromtheownerofs6tanodelaTinaja,SenorLuisMart!nez.Readynowtoenterthecaves,thetwogroupsdrovenorthtoLosSabinoswherethesixcaverswithFishpreparedtoenters6tanodelArroyo(seelocationmapinAMeSNewsletterVol.I,No.3andfollowingreportinthisissue).FromtheretheLandRovercontinued ontos6tanodelaTinaja,where,withhighhopes,thegearwasarrangedandweenteredthecaveataboutnoon.Sincetheplanscalledforspendingthenexttwo days deepwithinthesystem mappingthe"sandy-flooredpassage",wepackedoursupplies4000teettotheupstreamsectionwhere acampwasestablished.Sincethetripintothecave had beenquitetiring(noneotthegroup hadsleptthenightbetore),werestedforaboutanhourwhileeatingsupper,beforebeginningthesurvey.Atabout6webacktrackedtothecableladderdropattheendofthe1400'entrancepassageandsetupthefirststation.With Davidsketching,EdontheBrunton,andDonand Richardrunningthe100'steeltape,themappingwentswiftlyasweprogressedback towardthecamp.Sixhourslaterthelaststationoftheday wasmadenexttooursleepingbags,bringingthetotallengthofmappedpassageforthedayto3300teet.Thisdistanceincludedthemain"sandy-floored"passagefromthecableladderdroptocampithefirstseotionofthedownstreampassage,asfarasthefirstdrop;andthe300feetofpassageleadingtotheunexploredpitnearthecableladder.Fridaymorningaftertheusualcannedbreakfast,themappingwascontinuedintheupstreamdirectionawayfrom camp.Weplannedtopushthispassageuntilitendedorshowedsignsofconnectingwiththes6tanodelArroyosystem, which,atthetimeseemedquitepossible.Themappingprogressedquitewellthroughthedaydespitetheinconvenienceofcarryingthe30'scalingpole,telescopedintoonesectiontenfeetl.ng.Sincethispassagehasalreadybeenwelldescribed(Vol.I,PP. 29 and46),sufficeittosaythatmanyhourslaterwearrivedattheendottheexploredsectionwhere15teetourheads wasthesmallpassageforwhichwehadbroughttheunwieldypole.Attirstglancetheleaddidn'tlooktoopromising,butneverthelessthepolewaserectedwithacableladdertiedtothetop,andEdand Davidascended.The5'x5'passagequicklypincheddowntowhat seemedtobe animpassiblesqueeze.AttermuchpainandeffortEdfinallymanagedtoemerge ontheothersideinasmallroom, Which,after15feet,againnarroweddowntoatightcrawl.Fiftyfeetfurther,hecouldseeasizeableroomjustontheothersideofanotherverytighthole.Withvisionsofthesought

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106afterconnectiontos6tanodelArroyo, hehurriedonand foundhimselfinan8-highpassagewhich appearedtoturnrightinabout15feetandopenup.Almostrunning,hemadecorner,onlytofindadeadendwallthirtyfeetahead.Forthefirsttimeinthisremarkablecavesystem,theendofoneofthemanymajorpassageshad beenreached.Backtracking,Edreturnedtothegroup,andtheyallheaded backthroughthelakescarryingthepolewithAt1600feetfromtheendthereisalargeopeningabout25feetabovethefirstlargelakeinthepassage.SinceentranceintothisleadwillreqUireclimbingupa f1owstonewall,thepolewasleftlyingon aledgenearbysoastobeavailabletothenextexpedition.Continuingon,thefiveexplorersarrivedincampafterafourteenhourdayinwhich 4000feethadbeensurveyed,bringingthetwo-daytotalto7300feet.Muchofthisdistancehad beenthroughpassageswhich ranged from50to100feetindiameter.Afteralargemealthatnightthegroupsleptabouteighthoursandawokewiththetaskofpackingoutofthecave aheadofthem. Tolightentheloadsinthebackpacksasmuchaspossible,theyattemptedtoeatalltheremainingfood.Althoughthetriphad beenwellsupplied,theyfinallyachievedtheirgoaland beganhikingout.At noon"after48hoursinthecave,theyemergedfromthearroyoand repackedthewaitingLand Rover.ReturningtoValles,thegroupthathadbeeninSotanodelArroyo wasencounteredandnoteswerecomparedoveralunchofThatafternoonwasspentdrivingwestoverthenewroad whichwefoundhad been completed fromVallestoSanLuisThisroadcutsacrosssomeveryinterestingkarstareaswheremanysinkscouldbeseenonbothsidesofthehighway.Oneverypromisingone,located47km.westoftheVallestrainstation,was checked"butno opening was foundatthebottom.Sinceourtimewasrunningout,weturnedaroundatNogales andatteragainmeetingtheothergroupinValles,continuedontotheNacimientodelRioMante wherecampwasmadetorthenight.Sunday morning wasspentcheckingCuevadelosFossiles"aboutoneanqone-halfkms.aboveandsouthwestoftheNacimiento.Thisisthesame cavethatwas mentionedasarumored caveinAMCSNewsletter,Vol.I,No.4,p.39.Thefirst100teetofthecave werealargeentranceroomfrom whichextensiveamountsoffillhad been removedfromthefloor.Neartheendofthisroomapassageledtothelettfor150feet"attheendofwhichcouldbeseenaveryhighskylight.orinterestherewasalongaerialrootwhich extended fromtheskylightfarabovetothefloorofthecave.ReturningtotheNacimiento,weclimbedintotheRover and beganthelongtripbacktoAustin,arrivingfinallyat4A.M.Monday.106afterconnectiontos6tanodelArroyo, hehurriedon and foundhimselfinan8-highpassagewhich appearedtoturnrightinabout15feetand openup.Almostrunning,hemadecorner,onlytofinda dead endwallthirtyfeetahead.Forthefirsttimeinthisremarkablecavesystem,theendofoneofthemanymajorpassageshad beenreached.Backtracking,Edreturnedtothegroup,andtheyallheaded backthroughthelakescarryingthepolewithAt1600feetfromtheendthereisalargeopeningabout25feetabovethefirstlargelakeinthepassage.Sinceentranceintothisleadwillrequireclimbingup a f1owstonewall,thepolewasleftlyingon aledgenearbysoastobeavailabletothenextexpedition.Continuingon,thefiveexplorersarrivedincampafterafourteenhourdayinwhich 4000feethadbeensurveyed,bringingthetwo-daytotalto7300feet.Muchofthisdistancehad beenthroughpassageswhich ranged from 50to100feetindiameter.Afteralargemealthatnightthegroupsleptabouteighthoursandawokewiththetaskofpackingoutofthecave aheadofthem.Tolightentheloadsinthebackpacksasmuchaspossible,theyattemptedtoeatalltheremainingfood.Althoughthetriphad beenwellsupplied,theyfinallyachievedtheirgoaland beganhikingout.Atnoon"after48hoursinthecave,theyemerged fromthearroyoand repackedthewaitingLand Rover.ReturningtoValles,thegroupthathadbeeninSotanodelArroyowasencounteredandnoteswere comparedoveralunchofThatafternoonwasspentdrivingwestoverthenewroad whichwefound had been completed fromVallestoSanLuisThisroadcutsacrosssomeveryinterestingkarstareaswheremanysinkscouldbeseenonbothsidesofthehighway.Oneverypromisingone,located47km.westoftheVallestrainstation,waschecked"butnoopening was foundatthebottom.Sinceourtimewasrunningout,weturnedaroundatNogales andatteragainmeetingtheothergroupinValles,continuedontotheNacimientodelRio Mante wherecampwasmadetorthenight.Sunday morningwasspentcheckingCueva delosFossiles"aboutone anqone-halfkms. above andsouthwestoftheNacimiento.Thisisthesamecavethatwasmentionedasa rumored caveinAMCSNewsletter,Vol.I,No.4,p.39.Thefirst100teetofthecave were alargeentranceroomfrom whichextensiveamountsoffillhad been removed fromthefloor.Neartheendofthisroomapassageledtothelettfor150feet"attheendofwhichcouldbeseenaveryhighskylight.orinterestherewas alongaerialrootwhich extended fromtheskylightfarabovetothefloorofthecave.ReturningtotheNacimiento,weclimbedintotheRover and beganthelongtripbacktoAustin,arrivingfinallyat4A.M.Monday.

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ThearroyoleadingtotheentranceofSotanodelArroy ophotobyMillsTandyThearroyoleadingtotheentranceofSotanodelArroyo photo byMillsTandy

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TheentranceotSO'tanodelArroyophotobyMillsTandyTheentranceotSotanodelArroyophotobyMillsTandy

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107Persons:JaneCalvert,Susan Emory, JohnFish,Susan Loving, JamesReddell,A. Richard SmithDate:November24-28,1965Destination:SotanodelArroyo andtheareaaroundValles,S.L.P.Reported by: JohnFishWeleftforValleson Wednesdaynight,withallthepeopleand equipmentwecould packintoacar.TakingtheroutethroughReynosa,wesoonencountereda dense fog ontheMexicansideoftheborder.EarlyThursday morninginValleswemetthegrouptoSotano delaTinaja,andaftertalkingtoSenorMartinezweheadedforLosSabinosands6tanodelArroyo. (SeeAMCSNewsletterVol.I,3fordescriptionsofArroyo andThecarwastakentowithinafew hundredteetofthearroyoleadingtothecave whereweunloadedourgearandhikedaboutonemiledownthearroyototheentranceofSotanodelArroyo. Atfirstthearroyoisveryshallowwiththebedsoflimestoneslopingbackwardsagainstthedirectionotwaterflow.Afterabout400yards,thearroyobeginstocutmoredeeplyand.thebeddingplanesbegintoslopewith'thewaterThearroyocontinuesdownward andafterafewclimbabledropsonearrivesatthehugeentrancesink,whichisabout200teetdeep onallwallsexceptwherethearroyoenters.Afteraquickmeal,weenteredthecaveviathe601dropatthearroyo.Ourpurposewastocheckallpossiblesidepassagesalongthemainpassageandtoinvestigatethelakeatthepointotfurthestpreviousexploration.Duringourexplorationswefoundthatnoneotthesidepassageswereextensive,butthereisagoodpossibilityorthemainpassagecontinuingbeyondthelake.Passingthroughachannel(aboutthreefeetwide)overatlowstonebank,James droppedabout40feetintothemiddleofthelake.Hefoundthatthewallswerealmostoutofsightandreportedthatitlookedlikeapassagemaycontinueinthesamegeneraldirectionasthemainpassagehaduptothispoint.By comparing mapsofArroyo andTinaja,itappearedthatthedownstream (main)passageinArroyohasnowbeenexploredtowithin2000-3000feetotthe"sandy-floored"passageinTinaja.Itthesecavesconnect,therewouldbeaverylargesystemwithmultipleentrancesandmilesofAfteralongrest,James, Dick Smith, and Johnreenteredthesotanotoexploreandmaptherighthandwaterpassagewhich wasrumoredtobe3000feetlong.Usinginnertubes,wecrossedthelonglakeandcontinuedmappingtoatotalofabout700Thepassagehad beenaveraging10-12feetwideand20feetbutattheendofoursurveythepassagenarrowedtofeetandabout30feethigh.Bytraversingmuddyledgesonthewalls,anadditional500feetcave wasexploreduntilthepassagebecamea crawlway. Thepassagelast107Persons:JaneCalvert,Susan Emory, JohnFish,Susan Loving, JamesReddell,A.Richard SmithDate:November24-28,1965Destination:SotanodelArroyo andtheareaaroundValles,S.L.P.Reported by: JohnFishWeleftforValleson Wednesdaynight,withallthepeopleand equipmentwecould packintoacar.TakingtheroutethroughReynosa,wesoonencountereda dense fog ontheMexicansideoftheborder.EarlyThursday morninginValleswemetthegrouptoSotano delaTinaja,andaftertalkingtoSenorMartinezweheadedforLosSabinosands6tanodelArroyo. (SeeAMCSNewsletterVol.I,3fordescriptionsofArroyo andThecarwastakentowithina few hundredteetofthearroyoleadingtothecave whereweunloadedourgearandhikedaboutonemiledownthearroyototheentranceofSotanodelArroyo.Atfirstthearroyoisveryshallowwiththebedsoflimestoneslopingbackwardsagainstthedirectionotwaterflow.Afterabout400yards,thearroyobeginstocutmoredeeplyand.thebeddingplanesbegintoslopewith'thewaterThearroyocontinuesdownward andaftera fewclimbabledropsonearrivesatthehugeentrancesink,whichisabout200teetdeep onallwallsexceptwherethearroyoenters.Afteraquickmeal,weenteredthecaveviathe601dropatthearroyo.Ourpurposewastocheckallpossiblesidepassagesalongthemainpassageandtoinvestigatethelakeatthepointotfurthestpreviousexploration.Duringourexplorationswefoundthatnoneotthesidepassageswereextensive,butthereisa goodpossibilityorthemainpassagecontinuingbeyondthelake.Passingthroughachannel(aboutthreefeetwide)overatlowstonebank,James droppedabout40feetintothemiddleofthelake.Hefoundthatthewallswerealmostoutofsightandreportedthatitlookedlikeapassagemaycontinueinthesamegeneraldirectionasthemainpassagehad uptothispoint.Bycomparing mapsofArroyo andTinaja,itappearedthatthedownstream (main)passageinArroyohasnowbeenexploredtowithin2000-3000feetotthe"sandy-floored"passageinTinaja.Itthesecavesconnect,therewould be averylargesystemwithmultipleentrancesandmilesofAfteralongrest,James, Dick Smith, and Johnreenteredthesotanotoexploreandmaptherighthandwaterpassagewhich was rumoredtobe3000feetlong.Usinginnertubes,wecrossedthelonglakeandcontinued mappingtoatotalofabout700Thepassagehad beenaveraging10-12feetwide and20feetbutattheendofoursurveythepassagenarrowedtofeetandabout30feethigh.Bytraversingmuddyledgesonthewalls,anadditional500feetcave wasexploreduntilthepassagebecame a crawlway.Thepassagelast

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108exploredwaswelldecoratedinmanyplaces.Aplotofoursurveyshowedthattheright-handwaterpassagealmostpassesundertheentrancesink;While Dick SmithlocatedtheentranceofSotano delaTinaja,withrespecttoSotanodelArroyo,thenextday,Jamesand Johnreturnedbrieflytothemainpassagetoretrievealostpack.WethenheadedforVallestomeettheTinajamappers andobtainsomegood food andThatnightwesleptjustwestofVallesnearthenewhighwaytoSanLuisPotos!.ThenextdaywecontinuedwestalongthenewhighwaytowardS.L.P.inordertolookatthemountainkarst;ThishighwaycrossesthenorthernmostpartoftheXilit1akarstarea.Manydolinaswereseenfromthehighway,someofwhich lookedverypromisingforTheeasternsideoftherangehereiscoveredwiththesamejunglegrowthastherestoftherange.However,asweclimbedhighertheundergrowthdisappeared,andweenteredapinetreeforestandhighmountainkarstarea.Insomeplacestherearesmallsinksbythedozen,someofwhichsurelymustleadtoOnesuchareaisValledelosFantasmos,locatednearthehighestpartottherange.Shortlyafterpassingthroughthe"ValleyotthePhantoms",wecrossedapassatanelevationot9500feetfrom whichwecouldlookoutovermanyridgesofhighmountainkarst.FromherewedescendedtoSanLuisPotos!andcontinuedhome,stoppingbrieflyatSumidero 552inthegypsumareanearMatehuala.TheAMCSNewsletterispublishedmonthly bytheAssociationtorMexicanCaveStUdies,P.O. Box7672 Univ.Station,Austin,Texas 78712. MembershipintheAMCSis$5.00torthecalendaryear,withmembershipsstartingatthetirstofeachyear.Personsjoiningafterthefirstortheyearwillreceiveallbackpublicationstorthatyear.Membersareurgedtosubmitarticlesforpublication.Mapssubmittedtorpublicationshould beofatypesuitableforcopyingontoastandardorlegalsizemasterorforprinting.Longerarticleswithdetailedmapsareinvitedtorpublicationinabulletin.Tripreportsarerequestedfromalltrips.EditoroTerryRainesAssistantEditorJohnFishTreasurerPhilipWinsboroughTypistPamRainesStaffEdAlexanderBobBurnettDanEvansLithographerJohnSearcy108exploredwaswelldecoratedinmanyplaces.Aplotofoursurveyshowedthattheright-handwaterpassagealmostpassesundertheentrancesink;While Dick SmithlocatedtheentranceofSotano delaTinaja,withrespecttoSotanodelArroyo,thenextday,James and Johnreturnedbrieflytothemainpassagetoretrievealostpack.WethenheadedforVallestomeettheTinajamappers andobtainsomegood food andThatnightwesleptjustwestofVallesnearthenewhighwaytoSanLuisPotos!.ThenextdaywecontinuedwestalongthenewhighwaytowardS.L.P.inordertolookatthemountainkarst;ThishighwaycrossesthenorthernmostpartoftheXilit1akarstarea.Manydolinaswereseenfromthehighway,someofwhich lookedverypromisingforTheeasternsideoftherangehereiscoveredwiththesamejunglegrowthastherestoftherange.However,asweclimbedhighertheundergrowthdisappeared,andweenteredapinetreeforestandhighmountainkarstarea.Insomeplacestherearesmallsinksbythedozen,someofwhichsurelymustleadtoOnesuchareaisValledelosFantasmos,locatednearthehighestpartottherange.Shortlyafterpassingthroughthe"ValleyotthePhantoms",wecrossedapassatanelevationot9500feetfrom whichwecouldlookoutovermanyridgesofhighmountainkarst.FromherewedescendedtoSanLuisPotos!andcontinuedhome,stoppingbrieflyatSumidero 552inthegypsumareanearMatehuala.TheAMCSNewsletterispublishedmonthly bytheAssociationtorMexicanCaveStUdies,P.O.Box7672 Univ.Station,Austin,Texas 78712. MembershipintheAMCSis$5.00torthecalendaryear,withmembershipsstartingatthetirstofeachyear.Personsjoiningafterthefirstortheyearwillreceiveallbackpublicationstorthatyear.Membersareurgedtosubmitarticlesforpublication.Mapssubmittedtorpublicationshould beofatypesuitableforcopyingontoastandardorlegalsizemasterorforprinting.Longerarticleswithdetailedmapsareinvitedtorpublicationinabulletin.Tripreportsarerequestedfromalltrips.EditoroTerryRainesAssistantEditorJohnFishTreasurerPhilipWinsboroughTypistPamRainesStaffEdAlexanderBobBurnettDanEvansLithographerJohnSearcy


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Contents: Trip
Reports