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
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 phenomenon known as a blue hole is situated
60 miles off the mainland of Belize. There are numerous blueholes around
the world, but none as stunning as this one.
5. Mirny Diamond Mine , Serbia
I'm pretty sure most people have seen this one. It's an absolute beast and
holds the title of largest open diamond mines in the world. At 525 meters deep,
with a top diameter of 1200 meters, 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 homes and killed at least 3 people.