Scenic view point near the national park office

Doi Wao mountain peak

         The topographical features are of a high fold mpuntains (complex mountain) range running north to south. It is located in the west of Nan province until the border with Laos, and has an altitude range between 300 and 1,710 meters above sea level. The mountains have a gradient that averages 50%, and the highest summit is "Doi Wao." The majority of rock formations are sedimentary rocks which were formed during the Mesozoic, Paleozoic, and Neozoic eras. In addition there are igneous rocks scattered throughout the area. It is a catchment area for a number of creeks that  the Nan and Yom Streams, including the Samun Stream, Samian Stream, Wow Stream, Yao Streamr, Phi Stream, Tuum Stream, Si Phan Stream, Salai Stream, Raphi Stream, and Khang Stream.

            The climate is that of a tropical monsoon, which is influenced by the southwest monsoon during the rainy season and the monsoon northeast in winter. It is divided into 3 seasons:
•        summer from March to May
•        rainy season from June to October
•        winter from November to February
The average annual temperature: The lowest is about 9 degrees Celsius, and the highest is about 26 degrees Celsius. The average annual rainfall is 1,198 millimeters.

         The area is covered by mixed deciduous forest in the west and dry evergreen forests in the west and north. There are some hill evergreen forests along the mountain summit at heights of 900 meters above sea level. In addition, there are deciduous dipterocarp forests, karst topography forests, and grasslands, with differing trees and ground plants in each type of forest.

      In the mixed deciduous forests there is Teak, Black Rosewood, Gamari, Beleric myrobalan, Anogeissus acuminata, Dendrocalamus strictus, Bambusa nutans, Gigantochloa albociliata Munro, and Tinwa Bamboo. The Dry Evergreen Forest is home to Dipterocarpus turbinatus, Hopea ferrea Laness, Hopea odorata, Xerospermum intermedium, Mangifera caloneura, Dalbergia assamica, Miliusa velutin, Mucuna pruiens, Calamus siamensis, and Shower Orchid. The hill evergreen forest include trees such as Schima wallichii, Podocarpus neriifolius, Betula alnoides, Quercus kingiana Craib, Eagle Wood, White Rose, Gordonia axillaris, Clidemia hirta, Frangula crenata, and Fingerroot. The deciduous dipterocarp forests are a source of Burma Sal, Burmese Sal, Hairy Keruing, Dipterocarpus tuberculatus, Vietnamosasa pusilla, Phoenix acaulis, Kaempferia marginata Carey, and Ampelocissus martini, Burma Padauk, Acacia catechu, Feroniella lucida, Imperata cylindrica, and Dactyloctenium aegyptium. These are found near water sources, as are Sunrise Willow, Hydrilla verticillate, Cyperus rotundus, Salvinia cucullate, and Wolffia globosa.

          The species of wild animals found in Nanthaburi National Park are the Indian Muntjac, Yellow-Throated Marten, Pig-Tailed Macaque, Rhesus Macaque, Common Palm Civet, Lesser Bamboo Rat, Sunda Pangolin, Sunda Flying Lemur, Burmese Hare, Callosciurus caniceps, Chinese Pipistrelle, and the Southeast Asian Shrew. There are also many birds, including the Crested Goshawk, Pompadour Green Pigeon, Black-Naped Oriole, Blue-Winged Leafbird, Black-Crested Bulbul, Spangled Drongo, Myna, as well as the Elongated Tortoise, Siamese Big-headed Terrapin, Clouded Monitor Lizard, Ground Lizard, Burmese Python, Chinese Rat Snake, Long-Tailed Skink, Blanford's Flying Lizard, Slender-Legged Bush Frog, Truncated-Snout Burrowing Frog, Malayan Giant Frog, Common Puddle Frog, and Flat-Headed Toad. Common Bluebottle, Common Birdwing and Common Rose In the rivers there are fish such as the Flying Barb, Barbodes gonionotus, Asian Swamp Eel, Clarias macrocephalus, Kissing Gourami, Bivalves, Pond Snail, Apple Snail , and Lanchester’s Freshwater Prawn.