Phuket is the largest island in Thailand. At 540 km sq, it's about the same size as Singapore. Just over an hour by jet from Bangkok or Singapore, and with daily connections to most major Asian airports, Phuket is ideally situated for a short break or a relaxing vacation. Phuket is the natural base for exploring the Andaman Sea. Phuket Island itself is mainly granite, with low forested mountains and a series of fine white-sand beaches, mostly on the west coast.Much of the forest has been cleared, first for rubber plantations and then for tourism development. The one remaining significant stand of virgin rainforest -- Khao Phra Thaeo Park -- is worth a visit. On the island of Phuket and on the adjacent mainland, tropical rainforests of various types provide excellent opportunities for trekking.