I don't know how deep this mine hole is at Columbia Mine, Macedonia Canyon, Mojave National Preserve
Date: May 29, 2009, 15h42
I ride out of Mid Hills Campground and down Wild Horse Canyon Road into Round Valley
On the way out, I stop at the entrance kiosk to adjust my seat. These first few miles are fun today, but they can be quite a chore in the uphill direction with a fully loaded 10-ton bike.