Karoo an immense volume of rocks which was formed, geologically speaking, in a short period of time. Although almost the whole of the Great Karoo is situated on Karoo Supergroup rocks, the geological Karoo rocks extend over a very much larger area, both within South Africa and Lesotho, but also beyond its borders and onto other continents that formed part of Gondwana. The Karoo Supergroup was formed in vast inland basin starting 320 million years ago, at a time when the part of Gondwana which would eventually become Africa lay over the South Pole. Icebergs that had calved off the glaciers
Karoo north of the Great Karoo. Great locust swarms also frequently invaded or arose in the Great Karoo, and still occur from time to time today. The riverine rabbit, a critically endangered animal, lives exclusively in seasonal river basins and a very particular set of scrubland in the central semiarid region in the Karoo. It is hunted by falconiformes and Verreaux's eagles. Its numbers have been consistently lowering due to destruction of its habitat. They are unique relative to similar species through how they are polygamous and how each female can only produce one or two offspring per year. The introduction