GEOGRAPHY OF PHANG NGA BAY
The typography of the park is strongly influenced by several faults, particularly the north-east trend of the Klong Marui fault. This offsets the eastern terrain from the central mountain ranges by a right-lateral movement. This fault movement resulted in the formation of a large graben parallel to the fault. This graben is marked by the present bay. The high ground is produced by massive limestone blocks displaying classic karst scenery. These blocks extend southward into Phangnga bay where they form islands with vertical cliffs, mainly orientated in a north-south direction. Phangnga bay slopes seaward and is filled with tidal sediments. The bay itself is composed of large and small tidal channels which originally connected with the fluvial system of the mainland. .