Cape Lamanon is situated at the western part of the island, it is a natural geological system located south of Izylmetyev Bay near the mouth of the Ichara River, jutting into the Tatar Strait. The cape is shaped like a prominent steep jut of land 42 meters high. Its cliffs are dark of color, and its surface is covered with grass. On the both sides of the cape just near the shores there are islands and shoals, as well as rocks hiding under the water. Cape Lamanon was formed of volcanic rocks. A beautiful panoramic view of the Tatar Strait and its vicinities opens up from the tops of the rocks. And at the tip of the cape right near the water edge there is a cave.

The cape is named after the French seafarer Jean-Francois de La Perouse, who led the firs European expedition here, and later the cape was renamed in honor of a participant of the said expedition – Robert de Lamanon, a meteorologist, botanist and physicist.
The main object of interest on the island is a lighthouse built by the Japanese back in 1924 just when this part of the island was a part of the Japanese Empire. Now it is served by a few families living permanently on the island.