great-blue-hole-worlds-largest-submarin-secret-world

great-blue-hole-worlds-largest-submarin-secret-world

Great Blue Hole : World’s largest submarin... - Secret World

Lighthouse Reef, Belize

Lara Kipling
by Lara Kipling
135

Overview

Great Blue Hole is a giant submarine sinkhole. The hole is circular in shape, over 300 metres (984 ft.) across and 125 metres (410 ft.) deep. The world’s largest natural formation of its kind.