The Phraya Nakhon Cave is located at Moo 2, Ban Khaodang, Khaodang sub-district, Kui buri district, Prachuap Khiri Khan province in Thailand. This cave was discovered about 200 years ago by Chao Praya Nakhon Sri Thammarat while he was searching for a shelter during a storm. He explored the upper part of the mountain and found the cave so this cave is known as "Phraya Nakhon Cave”.
Phraya Nakhon Cave is managed by Khao Sam Roi Yot National Park. It is about 500 meters from Laem Sala beach and approximately 17 kilometers north from Khao Sam Roi Yot National Park. Tourists can go to the cave by renting a boat or by walking across Tian Mountain. After that, there is a climb up the mountain about 430 meters to reach the Phraya Nakhon cave. There is a well located at the footpath of the mountain known as Phraya Nakhon Well. It is made of baked clay bricks in a trapezoid shape. It was dug for drinking water in the past.