After a long and difficult hike you might reach Camelhead Arch, located in San Rafaell Swell.
ONLY EXPERIENCED hikers should attempt this. It requires great exposure and hand over hand free climbing. Also requires expert use of map and GPS to find this arch.
It’s dimensions: Span: 15.0 m, Height: 15.0 m
UTM coordinates: 12 S 546840 4304931