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CUEVA DELTECOLOTEby Terri Sprousewith Peter Sprouse and Carol VeselyThe Extreme Borehole in Cueva del Tecolote.(Peter Sprouse)94
During the last ten days of November1986, a Proyecto EspeleolOgico Purificacionexpedition returned to Cueva del Tecolotein western Tamaulipas to resume explorationof the virgin boreholes discovered theprevious year. This cave, with its picturesquearroyo entrance, is located in thevillage of Los San Pedro near the easternedge of the Sierra Madre Oriental.Cavers from Houston were the first toexplore the cave in the early 1970's. Theywere stopped 300 meters in by what appearedto be a sump lake. In the spring of 1980,PEP cavers took time out from exploringSistema Purification to begin a survey ofCueva del Tecolote. After subsequent tripsin 1982 and 1984, the cave had been surveyedto a length of 3301 meters and adepth of 211 meters. An expedition inNovember 1985 more than doubled the lengthof the cave to make it 7015 meters long.The large and enthusiastic crew forthe November 1986 expedition consisted ofBill Farr, Sarah Gayle, Tyler Gill, JimGoodbar, Margaret Hart, Erika Heinen, PeterKeys, Bill Mixon, Dale Pate, Susie Raines,Terry Raines, Scott Schiebner, MarionSmith, Peter Sprouse, Terri Sprouse, CarolVesely, Cyndie Walck, Jack White, AspenAdams, and Rosa lDckett. After rigging thenine drops and handlines in the initialportion of Tecolote, three survey teamscharged off to the lower area of the cavecalled the Confusion Boreholes.CONFUSION BOREHOLESAt Doll's Leg Junction, where theSerious Borehole begins, the group splitup. Carol Bill Farr, Sarah, and Marionclimbed down into the Major Abyss to awalking-sized passage. There was a goodchance that this passage might connect intothe end of the Spine Line, a passage surveyedthe year before. It had been namedfor the Ubiquitous sharp, spiney projec-ENTRANCECUEVA DEL TECOLOTETAMAULIPAS, MEXICOLENGTH: 11,084 1/ DEPTH: 231 1/ .-/'PLAN: ROTATED 295.0 DEGREES ~Y 2' ~?II:TEItS -1000o
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PLACES INTHIS ISSUELORETO\- II PURI
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Bot Roost10ometers5I1mprojected pro
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The large entrance chamber to Cueva
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Long Caves of Mexicocompiled by Pet
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Chilchotla is a newly discovered ca
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GUIXANI NDIA GUINJAOZONGOLlCA-CHILC
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GUINJAOTHI GUINJAOCrystalCylinderSS
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GRUTAS DEL COCONAFinding a cave to
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GRUTASTDEL COCONAeapa, Tabasco~ c:W
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Themilky-white sulpher river that f
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cne of the many skylight entrances
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mer rainy season and vegetation tha
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Looking up towards the entrance ofS
Page 45 and 46: CHIAPASThe Dutch Expeditionby Laure
Page 47 and 48: Jl:SRTUCDCCHIAPAS.EL ZAPOTAL.MEXICO
Page 49 and 50: ELEVATIONPLANI '1 11 JI .,.-,. mete
Page 51 and 52: \9}"CAVES OF FRONTERA COMALAPA~CUEV
Page 53 and 54: BELGIAN EXPLORATIONSAT ZOQUITLANMEX
Page 55 and 56: AVCOUPES TRANSVERSALES I t 15MG~MON
Page 58 and 59: w'"ill~0'" a:w
Page 60 and 61: eakdown collapse and a 2~meter pit.
Page 62 and 63: CENOTE NAHARONTULUM. QUINTANA ROOCo
Page 64 and 65: REM:J1'E CENCYI'ECenote Dos Ojos is
Page 66 and 67: 50taoo de Ocotempaby Terry RainesMa
Page 68 and 69: Mauricio Tapie on the Overhung Clim
Page 70 and 71: SEA CAVES OF LORETOby Dave BunnellO
Page 72 and 73: CUEVAS DE NOPOLOESTADO DE BAJA CALI
Page 74 and 75: SISTEMA PURIFICACION 198672by Peter
Page 76 and 77: slipped on a down climb and twisted
Page 78 and 79: There was some airflow, but it look
Page 80 and 81: Low displacement fault in scalloped
Page 82 and 83: SISTEMA PURIFICACION 198780by Peter
Page 84 and 85: the right side that was left unpush
Page 86 and 87: Dale Pate crawling over SOIre of th
Page 88 and 89: eeze, only seven hours. So it was s
Page 90 and 91: of the Dragon River, high over Infi
Page 92 and 93: named after a ghost of popular Mexi
Page 94 and 95: Meanwhile Peter, Terri, Rich, and P
Page 98 and 99: tions that covered the brittle rock
Page 100 and 101: A surprise continuation of the Fant
Page 102 and 103: ReviewsLas Cavernas de la Sierra Go
Page 104 and 105: Bill Steele labored on the story of
Page 106: Chiapas in 1981 and 1984. This we1l
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