Kamen Opasnosti (, Japanese 二丈岩　Nijouiwa) is an islet group of rocks, in La Pérouse Strait and the Sea of Okhotsk.

Geography

Kamen Opasnosti is located around 14 km southeast of Cape Crillon, the southernmost point of Sakhalin island. It is a small group of bare rocks, devoid of vegetation. Its length is 150 m, its width is 50 m, and its highest point is approx. 8 m.

History

The rocks were a great hindrance to marine traffic in La Pérouse Strait, aggravated by frequent dense fogs in the summertime. To avoid possible collision, ships had to set some of their crew members on guard to locate Kamen Opasnosti by listening to the roar of sea lions living on it. A lighthouse was finally constructed on the rocks in 1913, during the Japanese administration of the area.