Tham Phraya Nakhon is a large cave located in Khao Sam Roi Yot National Park. Prachuap Khiri Khan Province Away from Laem Sala Beach, a distance of 500 meters, away from the Khao Sam Roi Yot National Park Office. Go about 17 kilometers to the north. The interesting place of this cave is the throne room in the middle of the cave. The path inside the cave is quite wide and has a chimney that lets light shine into the cave. no flashlight needed Phraya Nakhon Cave is a cave that is easy to walk and not dangerous. Tourists can travel to the cave in two ways: by boat by renting a boat from Bang Pu village, the price is about 400 baht per boat, for 7-8 people, taking about 20 minutes to travel around the mountain, or by walking across the distance of Khao Thian. Approximately 530 meters (a bit tired, but it's fun, eat the wind, enjoy the view with a good atmosphere) suitable for those who have plenty of energy