Texas Speleological Survey

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This page last updated September 13, 2013

Turtle Shell Cave 

  • Length: 15 m (50 ft.) 
  • Depth: 21 m (70 ft.) 
  • Author: William R. Elliott 

Description:

Turtle Shell Cave is small but biologically interesting. Visitors must send a scout into the cave to look for bats with a red-filtered headlamp. Please stay out if bats are present.

Turtle Shell is sometimes visited by weekend tour groups, but only when there are no or very few bats present. Two entrances drop into the single main room. One is a fissure about 60 cm wide and 1.5 m long, while the other is a tight crevice 25 cm wide and 60 cm long. Both are about 6 m deep but can be crawled through. The room is about 10 m in diameter and 0.6 to 1.5 m high. Opposite the main entrance a circular chimney slopes steeply down for a total of about 15 m before ending in a short crawl. The cave fauna includes two species of crickets, the troglobitic millipede Cambala speobia, collembolans, and occasional cave myotis bats Myotis velifer incautus. One of the bats yielded eight parasitic streblid flies, the blind, orange "bat flies" commonly found in roosts.

Turtle Shell dries out at times and this greatly influences the amount of fauna seen. The cave is part of a baseline ecology study.   

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Turtle Shell Cave