Located in the territory of Pha Ngan island, that is Pha Ngan island forest of national forest reservation, there are waterfall, forest and the animal is quite, then can develop the place of travel in future. The Royal Forest Department has surveyed; Pha Ngan island forest of national forest reservation, Tan Sadej waterfall forest, Lard Mai Kaew mountain forest, Keay mountain forest, Ta Luang mountain forest, Hin Nok mountain forest, Laem Nai Pho Laem Ka Ta Kwum forest and Fire Mai mountain forest. Nowadays, in the processing has proclaim it to be a national park and using call of the name Tan Sadej Pha Ngan Island National Park , covers a total area of approximately 66 sq. km. or 41,250 rai. This area is water area of 19 sq. km. or 11.875 rai and land area of 47 sq. km. or 29.375 rai.
Topography
The landscape is high mountains, highest peak of the hills is Lra hill of 627 meters higher from the average sea level. The mountain forest is quite consists many island such as Pha Ngan island, Tae Nok island, Tae Nai island, Mar island and Tao island, about 30 kilometers to the north form the Pha Ngan island. Generlly the overlapping mountains and the plain stand by the valley and any of the bay area around the island.
Climate
The weather condition is rainfall almost all year round. Average annual temperature around 27.7 degree Celsius, highest temperature around 32.5 degree Celsius in May (hot). The lowest temperature around 23.9-24.0 degree Celsius between December and January, it making the climate cool down during the period. Average annual rainfall is measured at 1,848.3 millimeters, February is the lowest rainfall around 38.3 millimeters and November is the high rainfall around 427.8 millimeters.
Flora and Fauna
Plants
- Lush primary forests is the evergreen forest with green fresh trees year round, also the forest floor of important such as hopea odorata and rebound, etc.
- Dry primary forest is covered the hillside and most is channel of the stone mountain, the important plants are chukrasia velutina, etc.
- Limestone mountain forest found such as Portia tree, Hibiscus, etc.
Wildlife
Can be classified as follows:
- Mammals cervus unicolour, monkey, spectacled langur, slow loris and many javan mongoose more than 200 animals
- Birds - .brahminy kite, white-bellied sea eagle, hill myna, etc.
- Reptiles turtle, soft-shelled turtle is the living of river and water in forest.
- Snakes both venomous and non-venomous such as cobra, king cobra, green cat snake, python, etc.
- Amphibians frogs, blyths mountain frog, that any kinds found marsh.
- Other aquatic life striped sea catfish, striped snake-head fish, crab, shrimp, land tortoise, etc.
- Shell oyster, scaly giant clam, abalone
- Octopus splendid squid, rainbow cottle fish, etc.
- Sea turtle - found 2 kinds; green turtle and hawksbill turtle
