San Bernardino National Forest

Lost Lake

Lost Lake is a unique natural lake created by the San Andreas Fault. Although the lake has not been stocked with fish for many years, people still try their luck and toss a line in.
Many visit the lake to picnic along the banks. There are also opportunities for bird watching. This fault-formed lake is fed by deep natural springs, and those interested in geology can find evidence of the San Andreas Fault in the surrounding area. Lost Lake is located in the Cajon Pass area, contact the Cajon Ranger Station for current conditions and directions.