Directions to Tunnel Mill:
Tunnel Mill is located 20 miles south of Rochester.
Take Hwy 63 out of Rochester to Stewartville, turn east on Hwy 30 to County Highway 1 (approx 5.5 miles).
Turn south on County Highway 1. Follow CO HWY #1, about 6.5 miles to Tunnel Mill on the east side of the road.