Spearfish Canyon Scenic Byway (and Lead)
Homestake Mine pit
The Homestake deposit was discovered in 1876. Over the years it has become the largest and deepest gold mine in North America. With a depth of 8,000 feet, it has produced more than 70 cubic meters of pure gold - a cube roughly 13.5 feet on a side. The mine ceased production in 2002 and since has been used for scientific research.