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Timber Mountain Caldera

Timber Mountain Caldera
Timber Mountain Caldera

Timber Mountain Caldera, located within Nellis Air Force Gunnery Range and Nevada Test Site, is a restricted area containing a remnant of an elliptical caldera developed in the late Miocene and early Pliocene. It covers eight to ten miles and is surrounded by a moat-like depression extending to the rim of an older caldera.

Location: Nye County, NV

Year designated: 1973

Acres: 266,281

Ownership: Federal


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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