1. Kimberley Big Hole - South Africa
Apparently the largest ever hand-dug
Excavation in the world, this
1097-meter-deep mine yielded over three
Tons of diamonds before being closed.
2. Glory Hole - Monticello Dam, California
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. A glory hole is used when
a dam is at full capacity and water needs to be
Drained from the reservoir.
3 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.
4 Sinkhole in Guatemala
This photo is of a sinkhole that occurred
February 2007 in Guatemala . It swallowed two
Dozen homes and killed at least three people.
5. This is the famous Rat Hole in Sri Lanka .