Near the town Mirnain, in Eastern Siberia is diamond mine, is 525 meters deep and 1250 meters in diameter.
Big Hole Museum – Kimberley, South Africa
Hole in the road in Guatemala
The Bingham Canyon Mine - Salt Lake City, Utah, USA, in the Oquirrh Mountains is 1200 meters deep and 4000 meters width. It is the world's largest man-made excavation.
Diamond mine in the North Slave Region of the Northwest Territories, Canada
A hole under the sea off the coast of Belize. It is 100km from mainland near a small atol.Great blue hole.