Entrance fees to the national park are: 40 baht for adults and 20 baht for children. Khao Chamao – Khao Wong is the source of many streams in Rayong Province. It is rich in wildlife and features stunning natural beauty, including waterfalls, cliffs, caves, and breathtaking landscapes. Inside the area, there are convenience stores that offer coffee, drinking water, and snacks, open daily from 8:00 AM to 4:00 PM. The highest peak here is "Yok Khao Chamao," which rises to an elevation of 1,024 meters above sea level. This area serves as the source of several streams, including Khlong Raho, Khlong Phole, and Khlong Hinphleng.