A coupleh miles of trails. Starting from the mines, going up the stairs, there's a mile loop with some good variety: views down the hill, an old building, a couple of aborted mines, and some forest. Then on the other side of the street by the stamp mill there's another mile or so. Steep but not difficult. Can be crowded at the base by the mines but there's not many people who go up the hill.

The self-guided audio tour of Gold Bug Mine is $12, but the Hendy Stamp Mill and the hiking trails are free.