ROFL! That be a BIG HOLE!
edzo - please toss me a rope, a sandwich, a flashlight and some water, and maybe a first aid kit.... I”M GOING IN!
ps - what IS that hole?
"Well", he said (shaking a half pound of dirt out of his shirt)....
The Mir mine also called the Mirny mine, is an open pit diamond mine located in Mirny, Sakha Republic, in the Siberian region of eastern Russia. The mine is >525 meters (1,722 ft) deep (4th in the world) and has a diameter of 1,200 m (3,900 ft),[1] and is one of the largest excavated holes in the world
There's other information including the Open Pit mine was closed in 2001, but tunnel mining has continued on the same site until the present with plans to continue until approx 2030.
There are other open pit mines producing gold, silver, copper and diamonds (plus platinum although couldn't find specific locations where that was recovered) scattered all over the area, including near the origination of the Cash Plane.
Oh yeah. It definitely IS NOT the Brigham Pit.