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
#2. Glory Hole – Monticello Dam, California
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
#3. Bingham Canyon Mine, Utah
#3. Bingham Canyon Mine, Utah
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
#4. Great Blue Hole , Belize
#4. Great Blue Hole , Belize
This incredible geographical phenomenon known as a blue hole is situated 60 miles off the mainland of Belize. There are numerous blue holes around the world,
but none as stunning as this one
#5. Mirny Diamond Mine , Siberia
but none as stunning as this one
#5. Mirny Diamond Mine , Siberia
#7. Sinkhole in Guatemala
From: all4yourfun.com
