Lyons Peak is a prominent mountain in San Diego County, California.

The top of the mountain is enclosed in an almost rectangular patch of the Cleveland National Forest.

[3] Lyons Peak is located on restricted land and trespassing is prohibited.

[4] As an army captain, he passed by the peak in 1851 while scouting a new route east to the desert.

This San Diego County, California–related article is a stub.