Phang Nga Bay is a 400 sq.km bay in the Andaman Sea between the island of Phuket and the mainland of the Malay peninsula of southern Thailand. Since 1981 a big part of the bay is protected as the Ao Phang Nga National Park. Limestone cliffs with caves, collapsed cave systems and archaeological sites are found about Phang Nga Bay. Some 10,000 years ago, when sea levels were lower, one could walk from Phuket and Krabi.

A number of diverse cultures co-exist in local communities, which practice fishing, harvesting Nypa palm fronds for thatch, and catering to an international tourist presence drawn both by the natural beauties and by the archaeological sites, which have paintings more than a thousand years old.