Established in 1991, Khao Lak-Lam Ru national park covers an area of 125 square km. It was a terrestrial park until 1995 when a portion of the coast was added to the park.
There are plenty of hiking trails leading to stellar viewpoints, waterfalls and secluded beaches. Wildlife includes wild pigs, macaques, barking deer and reticulated pythons. Three rudimentary cabins are available for overnight stays, as are tent rentals for visitors who do not have their own.