Phranang Cave Beach or Phranang Cave Bay is the beautiful beach with Limestone Mountain and cliff. At the end of path will have cave that surrounding of white sand and clear sea. In the morning will be full of Thai and foreigner tourists. At here, it good for swim or enjoy with other activities on the beach such as cliff climbing, sunbath, kayaking, see the sunset, volleyball and football, etc.
Reference: https://www.tourismthailand.org/Attraction/phranang-cave-beach