For the more information about the air resources of the National Park Service, please visit http://www.nature.nps.gov/air/.
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
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