8MB PDF - Association for Mexican Cave Studies

+150PLAN+240COUPECOYOLATLPROJETEE:::l ~\~'0: .~~>:~rC~';;;~==~=======:=: . _several kilometers of passage. Some of itwas highly decorated, including gypsumneedles that were 50 cm long. We namedthis passage La Fuite en Avant.After a week of no rain, we returnedto the canyon passage and were able toproceed upstream for several kilometers.Altogether we mapped 19 kilometers ofpassage in Coyolotl, to a height of 240meters.THE EMPIRE STRIKES BACKby Patrick Bestgen and Richard GrebeaudeThe resurgence group had joined theplateau team at Lorna Bonita to look forcaves that might connect to resurgencecaves below. They went to Palapa, which isin a dry valley above Alcomunga. Theyexplored 800 meters of a fossil maze cavecalled AL7. Meanwhile, four of the groupwent to San Migue1 to check a pit found theyear before. It turned out to be 90 metersdeep.They turned their attention to thearea around Q::otempa, where they had threepit leads. They noted that the pits wereall located along the same fault.Las Abejas or OC2 is a rectangular pit(30m by 7m) and is about 120 meters deep.The vegetation around the pit made itdifficult to rig the drop on the free side.Instead they had to rebelay. On the bottomthey found three human skulls and otherbones.OC3, or Pozo Verde, was explored tothe -150 meter level on the first trip.They returned with survey equipment andmapped it to the -380 leveL At the bottomthey found a large room with no apparentway 011.Another cave, with a small stream init, was explored down a series of pits tothe -150 meter level. The group decidedthat aside from some pretty pits, this areadid not seem too interesting.52