Ko Rok

Ko Ha

Kong Hin Muang-Hin Daeng

Khao Mai Kaeo Cave

Ko Ngai

Laem Tanot

      Mu Ko Lanta National Park is located in Ko Lanta District, Krabi Province, and consists of 25 islands, which can be divided into four groups: the Ko Rok Group, including Ko Rok Nok and Ko Rok Nai, which is in the north of the area has standard terrain was rocky cliffs that are eroded. On the west side of the island is a long ridge, and the landing side of the island is about 2.4 kilometers long. Its highest peak is at 208 meters above sea level.

Ko Rok Nok is the same size as Ko Rok Nai and its highest peak is 156 meters abovsea level. There are two wide plains between the gorge and the sea, which are Thalu Beach and Ao Man Sai.The geology of Ko Rok is from the Permian-Carboniferous period which ranges  from 345 to 230 million years ago.

Ko Ha Group (Ko Tu Kon Li Ma) and Ko Hin Daeng: Ko Ha Group consists of five small islands, which are fairly flat on the two large islands, with the three smaller islands having rocky outcropps. The geological features of this group of islands are limestone in the Ratchburi Group, from the lower-middle Permian period, which has an age range of 280–230 million years ago.The Ko Ngai Group consists of Ko Ngai and Ko Ma. The east of Ko Ngai has a long sandy beach, and to the south is a bay. Steep hills characterize the northwest side, with the highest peak at 198 meters above sea level. Ko Ma looks like an outcrop without any plain area, and the overall geological conditions of this group are similar to those of Ko Rok.

The Ko Lanta Group consists of 16 large and small islands, such as Ko Lanta Yai, Ko Talabeng, and Ko Mai Ngam. The topography of Ko Lanta Yai is complex mountain landscape with gradients of 35 to 50 percent in the central area and peaks ranging from 100 meters sea levelto the highest peak at 488 meters above sea level. There are plains to the south, but on other islands, there is only steep rocky areas without any flatland. The geography of Ko Mai Ngam and Ko Mai Ngam Tai occurs from alluvial and estuarine sediments laid down in wetlands of the Holocene period.

The geology of Ko Ra Pu Phang, Ko La Pule, and Ko Talabeng is similar to the Ko Ha Group, with Ko Lanta Yai being similar to the Ko Rok Group. Ko Lanta Yai has many streams that flow except in the dry season, with only three streams flowing all year round, namely the Khlong Chak Stream, the Khlong Nam Chuet Stream, and the Khlong Nin Stream.

       The Institute of Climate Information Education located at the weather station near the National Park,  found that the average temperature throughout the year is 28 degrees Celsius, with the highest average temperature of 34 degrees Celsius in March. The lowest average temperature was 24 degrees Celsius in December.

The average annual rainfall is more than 2,100 millimeters, and in falls mainly in the rainy season, which is influenced by the southwest monsoon. A trip to the Mu Ko Lanta National Park during this period is not safe for visitors, so please follow the opening of the annual tourism season for Mu Ko Rok, Kong Hin Daeng, and Kong Hin Muang, as follows:

- Close tourist season from May 16 to November 15 every year.

- Open tourist season from November 16 to May 15 of every year

    Forest resources are abundant, and there is a great diversity of plant species. which can be classified as follows: Tropical Rain Forest (19.42 square kilometers) is on Ko Lanta Yai along Lan Ta Mountain range, which covers almost all of the territory of the National Park. The high canopy and understory layer has an average height of 15–25 meters. The important plants are Shorea henryana., Dipterocarpus turbinatus C.F.Gaertn., Lagerstroemia floribunda Jack, and Hopea ferrea Laness. On the ground floor, there is Licuala paludosa Griff, Calamus viminalis Willd., Calamus caesius Blume and Calamus peregrinus

Mangrove swamp forests surround the small islands of Ko Mai Ngam, Ko Mai Ngam Tai, and Ko Ngu. Most of the plants are similar in height, with a maximum height of 5 meters. Typically, the plants found are Avicennia alba Blume, Rhizophora apiculata, and Rhizophora mucronata.

The beach forest is found in a small area between the boundary of the beach and the tropical rain forest of Ko Ngai housing important plants such as Terminalia catappa, Derris indica (Lamk.) Benn., Goat's Foot creeper, and Seashore Screwpine.

Wildlife is grouped into six major categories: mammals from 20 families, 30 genera, and 38 species. The two species have already disappeared from Ko Lanta, which are Sambar and Bengal Tiger. Dugong are protected species. The two species that are likely to disappear are Muntjac and Fishing Cats Marshall's Horseshoe Bat is a rare species there.

There are a total of 58 families of birds, with 130 genera, and 185 species. Birds commonly found in the National Park include the Brahminy Kite (Haliastur indus), , Bridled Tern, and Grey-Capped Emerald Dove. Rare birds include the Orange-Breasted Trogon, Siberian Thrush, and Little Spiderhunter.

Reptile species that are common include the Flat-Tailed House Gecko, Common Water Monitor, Reticulated Python, and Indo-Chinese Rat Snake. There are only a small number of amphibians, which are the Malayan Giant Frog and the Ornate Narrow-Mouthed Frog. The Northern Tree Frog and the Indochinese Dwarf Toad can be found around the buildings and water sources in the forest, and arare species found in the park is the Doria Frog.

Freshwater and marine fish can be found such as the Pearl Danio, Dwarf Snakehead, and Puntius aurotaeniatus.

Marine fish can be found in the coral reefs, on the Hin Beach shore, and in the mouth of Namchuet Canal. These include Freshwater Garfish, Lizard Fish, Porcupine Fish, and Balloon FishCoral reef animals include Plerogyra sinuosa (Dana, 1846), Staghorn Coral, Mushroom Coral, and anemone-like coral (Goniopora spp.), Diploastrea heliopora .