The world's amazing holes can be found in the different part of our planet, most of them are made by man in search of minerals and others are created by nature or maybe have been standing there for thousand of years ago.
Great Blue Hole ( Belize )
This large submarine sinkhole can be found in Belize its circular hole measures over 300 m (984 ft) across and 124 m (407 ft ) deep. This one comes on the top 10 list of all scuba diver's must visit place because it is not only enormous but it is also rich with thousands of aqua marine resources and spectacular beauty of underwater experience. This amazing underwater hole is believed to be formed 60,000 years ago.