Otjikoto Lake

Otjikoto Lake is the smaller of only two permanent natural lakes in Namibia. It is a sinkhole lake that was created by a collapsing karst cave. It is located 20 kilometres north-west of Tsumeb and only 100 meters from the main road B1. The lake was declared a national monument in 1972.The diameter of the lake is 102 metres; its depth is supposedly a maximum of 91.44 meters plus according to scans. According to a Namibian tourism information organisation, "the depth varies from sixty two meters at the side to one hundred meters in the center, and in some places leading off from the side depths of one hundred meters have been recorded", while an article in the Allgemeine Zeitung explains the depth problem: "the lake tapers into a lateral cave system making it impossible to determine its exact depth, estimated to be in access of 142 meters."