For the more information about the air resources of the National Park Service, please visit http://www.nature.nps.gov/air/.
Amboy Crater is an excellent example of a recent volcanic cinder cone with an unusually flat crater floor.
Location: San Bernardino County, CA
Year designated: 1973
Ownership: Federal, Private
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