Dwyka River

The Dwyka River is located in the Karoo region, in South Africa.

In the 1870s, the Cape Colony government expanded its railway network inland, towards the diamond fields of Kimberley.

[1] The river's name was subsequently also adopted by geologists to define the Karoo Ice Age some 300 million years ago.

Key sites in South Africa show evidence of glaciation, including Nooitgedacht near Kimberley.

Geologists term this upland the Cargonian Highlands, stretching from what is now the Northern Cape through Gauteng to Mpumalanga.