Comment by Fricken

The Owens river gorge has the highest concentration of sport climbs anywhere in North America, but there's not much variation, they're mostly edge ladders on weirdly slippery rock.

Not far away are the world's most photogenic boulders, the Buttermilks, and when I visited (from Canada) I was surprised to find that the boulders are on LA municipal property and the pipe that takes Owen's River's water over the Sierras is nearby.