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Devil's Sinkhole is a deep, bell-shaped, collapsed limestone sink with cave passages extending below the regional water table. Located within Devil's Sinkhole State Natural Area, it is the best example of a collapsed sink along the Balcones Fault and within the Edwards Plateau region of Texas. The sinkhole provides habitat for a colony of bats estimated to number in the several millions.
Location: Edwards County, TX
Year designated: 1971
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Please remember, National Natural Landmarks (NNLs) are not national parks. NNL status does not indicate public ownership, and many sites are not open for visitation.
Last Updated: June 28, 2012