8 Amazing Holes on Planet Earth! Excluding Demi Moore. These holes are not only amazing, but so me of them are really terrifying - especially #8!  The sheer scale of these holes reminds you of just how tiny you are. 1. Kimberley Big Hole - South Africa   Apparently the largest ever hand-dug excavation in the world, this 1097 me ter  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 consu me 14,400 cubic feet of water every second. 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   This incredible geographical pheno me non known as a blue hole is  Situated 60 miles off the mainland of  Belize .There are nu me rous blue holes  Around the world, but none as stunning as this one. 5. Mirny Diamond Mine , Serbia   This one is an absolute beast and holds the title of largest open  Diamond mine in the world. At 525 me ters deep, with a top dia me ter  Of 1200 me ters, there's even a no-fly zone above the hole due to a few  Helicopters having been sucked in. 6. Diavik Mine , Canada   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. 7. Sinkhole in Guatemala   These photos are of a sinkhole that occurred early this year in  Guatemala . The hole swallowed a dozen ho me s and killed at least 3 people. 8. And the most terrifying one of all   This is the famous 'Rat Hole' that you have heard about. It is capable of swallowing trillions and trillions of U.S. Dollars... Annually! Never to be heard from again. Didn't see that coming, did You?