Koh Phangan (or Ko Pha Ngan, Ko Pha-Ngan in Thai spelled as เกาะพะงัน) is part of the Suratthani province and is located in the Gulf of Thailand (in the South East of Thailand). It is the center island of the Samui archipelago, stretching about 15 km north to south and 10 km east to west. Ko Phangan has two sister islands; Koh Samui in the south and Koh Tao in the north. A large proportion of Koh Phangan is covered by coral reef fringed beaches, tropical rainforest and coconut groves. Fishing and coconut production are still an important source of income, together with tourism.