The Fish River is Namibia's longest interior river, and the
gigantic canyon through which it passes is the largest in Africa.
In fact, it is the second largest in the world, after the Grand
Canyon in the USA. Parts of the canyon began to form about 650
million years ago, when plate movement cracked the earth. Much of
the rest took shape from the river cutting its way through the
granite river bed.
Today, this activity has created a breathtaking sight. In
places, the river bed reaches a depth of 1,640 feet (550 metres),
whilst the canyon itself is 100 miles (161 kilometres) in length,
and at its widest point, it is 21 miles (34 miles) across.