Cobblestone Mountain north side. This is the usual ascent route and it is shown by the red track. There is no evidence of any fire lookout on the summit. Photos July 27, 2008. The best description of the drive-in and climb is at:
The register is in one of the fine cast aluminum boxes like many Sierra peaks. Placed in 1960.
Cobblestone benchmark which is at the summit. Placed in 1941.