Homestake Open Cut

An isolated early 20th-century gold mine in the remote Pine Forest Range contains much preserved equipment.

Nicknamed the "Grand Canyon of the North," this open-pit mine in Minnesota has a much shorter history.

This 80-foot towering concrete structure, complete with wheel, remains a stark reminder of the coal mining that took place here between 1904 and 1966.

The world’s largest museum dedicated to mining, complete with an underground show cave.

Vulture Mine was Arizona’s most productive gold mine, and instrumental to the development of Phoenix.

This abandoned open-pit copper mine features stunning turquoise mineral pools and excellent rock-hunting opportunities.

One of the largest vehicles ever built is now open to the public.

A glimpse into Taiwan's coal-mining past.