Walk through a Gold Mine
Empire Mine State Historic Park 10791 E Empire St, Grass Valley, CAMeet at 11am from the Main Parking Lot. Hiking the 2.5 mile Osborn Hill Loop Trail, a moderate trail with some elevation gain/loss. Suggested ages: 10+ and 30 people as the maximum. Dogs on leash are allowed on this trail, however, please leave your dogs at home for the group hike. The Osborn Hill Loop …
Free