Most famous is Phang Nga Bay National Park, a geological wonder filled with islets, sunken caverns, and startling rock formations rising vertically out of the sea. The bay is extremely sheltered and therefore ideal for expeditions on sea kayak that explore the many fascinating caverns and islands throughout the bay. Nga Bay is famous for spectacular scenery with limestone cliffs rising out of green water. There are caves, lagoons and tiny secluded beaches awaiting discovery.