Location: San Bernardino County, California

This peak is in the "Little San Bernardino Mountains". "Berdoo" has long been local slang for "Bernardino", at least since the mining era (ca.1870). Peak name was corrupted to this form some time before WWI, but is not shown on current topos.

Name first appeared on USGS Pinyon Well topo (1943).

Peak was added to the HPS Peak List in 1959.