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UID:pretalx-nss-convention-2026-WCXAVH@talks.caving.dev
DTSTART;TZID=EST:20260708T100000
DTEND;TZID=EST:20260708T103000
DESCRIPTION:At almost 91 km length and 1\,529 m depth\, Sistema Cheve is th
 e 11th deepest cave in the world. While it is clear that the cave was used
  and revered by ancient peoples\, the first modern speleologists to visit 
 the cave were Carol Vesely and Bill Pharr in 1986. They began mapping imme
 diately and soon organized a project to explore and survey the cave. This 
 period of exploration fielded expeditions annually through 1997. By the en
 d of 1997\, the main Cheve river disappeared into a sump at the end of Wet
  Dreams\, and strong airflow had been pursued up through 150 meters of ske
 tchy breakdown only to be lost in Harbinger Hall. In 2003\, there was an e
 xpedition focused on diving the sump at the end of Wet Dreams\; while they
  did succeed in diving through two sumps\, they did not find the hoped-for
  continuation of the big boreholes that people often associate with Cheve.
  A second period of exploration began in 2017 and has fielded annual exped
 itions with the exception of 2020 during the height of Covid. At the start
  of 2017\, the cave was 26.1 kilometers long and -1\,484 meters.
DTSTAMP:20260826T233027Z
LOCATION:Auditorium
SUMMARY:40 Years of Exploration at Cueva Cheve\, Oaxaca\, Mexico - 
URL:https://talks.caving.dev/nss-convention-2026/talk/WCXAVH/
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