It is located 20 kilometres ( 12 mi ) north - west of Tsumeb and only 100 meters from the main road B1 .
It is a sinkhole lake that was created by a collapsing karst cave .
sinkhole lake is located 20 kilometres ( 12 mi ) north - west of Tsumeb and only 100 meters from the main road B1 .
It is a sinkhole lake that was created by a collapsing karst cave .