Roter Kamm is located in Namibia

Roter Kamm (German: Red Ridge) is a meteorite crater, located within the Namibian section of the Namib Desert approximately 80 kilometres (50 mi) north of Oranjemund in the ǁKaras Region. It is 2.5 km in diameter and is 130 metres (430 ft) deep. The age is estimated to be between 4 and 5 million years placing it in the Pliocene. The crater is exposed at the surface, but its original floor is covered by sand deposits at least 100 metres (330 ft) thick.

• http://en.wikipedia.org/wiki/Roter Kamm crater