Koh Kra, at latitude 11.82 (11° 49′ 0 N) and longitude 102.38 (102° 22′ 60 E), is a hypsographic (island) located in the area / state of Trat in Thailand.The island is 438  kilometers southeast (144°) of the approximate center of Thailand and 295 kilometers southeast (137°) of the capital Bangkok.

Koh Kra is a deserted island in the gulf of Siam 80 kilometres from Nakhon Si Thammarat, 55 kilometers from the coastal town of Pak Panang.

Koh Kra is an uninhabited island of three and half square miles of rock and jungle, off the coast of southern Thailand. Thai fishermen used the island as a prison to hold Vietnamese refugees.

Koh Kra, located about 54 km from the nearest shore, consists of three islets: Ko Kra Yai, Ko Kra Klang and Ko Kra Lek, as well as one small rocky outcrop, Hin Ko Kra. The whole area surrounding these islets is a good diving spot owing to its relative remoteness.

Until spring of 1981, Thai fishermen hunted refugee women on that island. According to UNHCR, one female refugee was severely burned when southern Thai fishermen, attempting to flush her out, set fire to the hillside where she was hiding. Another cowered for days in a cave, waist deep in water, until crabs had torn the skin and much of the flesh away from her legs.

By Oct 1980, 160 refugees are known to have died on that island alone. The total no doubt was far higher before a detail of six or eight marines was stationed on the island in the spring of 1981 and halted the carnage.

Source: Wikipedia