Bogenfels

[1] The main formation is a 55-metre (180 ft) high rock arch close to the coast.

It is not easily accessible, due to the terrain and its location within a restricted diamond-mining area Sperrgebiet, at 27° 28'S, about 95 kilometres (59 mi) south of Lüderitz and 32 kilometres (20 mi) south of Pomona but there are official guided tours.

With its highest point at 55 metres (180 ft) above sea level, the formation is a mix of hard dolomite and soft shale.

[citation needed] A private narrow-gauge electrified railway once served the diamond mining industry.

It was completed in 1913 but destroyed in World War I in 1915 by South African troops.