Casa de Oro-Mount Helix, CA

Casa de Oro-Mount Helix is a census-designated place in East County San Diego, made up of several unincorporated neighborhoods near El Cajon, La Mesa, and Spring Valley. The Mount Helix name comes from a peak named in the 1870s after a European snail found there, which is the kind of local oddity that gives the area texture. Today it is mostly residential...