Kolopom

Kolopom is the Trans-New Guinea language family of Kolepom Island, also called Frederik Hendrik Island, a low-lying leaf-shaped island off southern New Guinea separated from the mainland by the narrow Muli Strait. Its languages are Kimaama, Riantana and Ndom, together with the more distant Moraori, while the separate Mombum family of the island's south is not part of it.

Dutch seafarers were the first Europeans to reach it: Willem Janszoon sighted the island from the Duyfken in 1606, and Jan Carstenszoon named its south-western cape Valse Kaap in 1623.

Long charted as part of the New Guinea mainland, Kolepom was proven an island only in 1835, when Dutch survey sloops sailed the strait and named the island after Prince Frederik Hendrik.