Apparently the largest ever hand-dug excavation in the world, this 1097 meter deep mine yielded over 3 tons of diamonds before being closed in 1914

These 7 holes are not only amazing, but some of them are really terrifying! The sheer magnitude of these gaping holes reminds us of how men will scar the earth to pursue their quest for power and wealth.

A glory hole is used when a dam is at full capacity and water needs to be drained from the reservoir. This is the ‘Glory Hole’ at Monticello dam, and it’s the largest in the world of this type of spillway, its size enabling it to consume 14,400 cubic feet of water every second

This is supposedly the largest man-made excavation on earth. Extraction began in 1863 and still continues today, the pit increasing in size constantly. In its current state the hole is miles deep and 2.5 miles wide

The mine is so huge and the area so remote that it has its own airport with a runway large enough to accommodate a Boeing 737. It looks equally cool when the surrounding water is frozen

This photo is a sinkhole that occurred early this year in Guatemala . The hole swallowed a dozen homes and killed at least 3 people