Mu Ko Hong is a group of limestone islands iclunding Ko Lao or Ko Sa, Ko Lao Riam, Ko Pakka and Ko Lao La Ding. Most of them are limestone islands with fine beaches, coral reefs in both deep and shallow water and various kinds of fish. Ko Hong or Ko Lao Li Pe is the biggest island in the south. There is a 400 meter hiking trial around the island.

This area also suitable for sea-canoeing. Mu Ko Hiong is located at the edge of the Than Bok Khorani Park and is accessible by boat from Ao Nang. The trip takes about one hour.