Huai Nam Dang National Park

Huai Nam Dang National Park (อุทยานแห่งชาติห้วยน้ำดัง) is a national park in Thailand's Mae Hong Son and Chiang Mai Provinces. This mountainous park features scenic mountain viewpoints, waterfalls, and hot springs.

Geography
Huai Nam Dang National Park is direct east of Pai in Pai District of Mae Hong Son Province and about 50 km north of Chiang Mai in the Mae Taeng and Wiang Haeng Districts of Chiang Mai Province. The park's area is 1252 km2. The highest point is Doi Chang peak at 1,962 m, the height ranges from 400 m to 1,962 m. The park's streams are the source for rivers including the Pai and Taeng.

Climate
The park is generally cool all year round, with average high temperature of 23 C and average lowest temperature of 8 C. Rainy season is from May to September, average rainfall is 1,134 mm/year with max.temperature of 24 C and min.temperature of 10 C. Winter is from October to February with max.temperature of 20 C and min.temperature of 2 C. Summer is from March to April with max.temperature of 28 C and min.temperature of 12 C.

History
A survey of the Huai Nam Dang area was set up in December 1987. Later on 14 August 1995 Hui Nam Dang National Park, covers Chiang Dao, Mae Taeng and Mai Pai forests, with an area of 782,575 rai ~ 1,252 km2 has been declared the 81st national park.

Attractions
Doi Chang and Doi Kiew Lom mountains offer popular viewpoints of neighbouring mountains and a "sea of fog" effect on winter mornings. Park namesake waterfall, Huai Nam Dang, consists of four levels and is about 50 m high and 40 m wide. Mae Yen is another year-round waterfall. Park hot springs include Pong Dueat, consisting of three or four large pools, and Tha Pai in the Pai District section of the park.

Flora
The park is home to numerous forest types, such as evergreen, deciduous and dipterocarp forest. Evergreen forest include: • Ailanthus triphysa

• Palm tree

• Red pine

• Tenasserim pine Deciduous forest include: • Alphonsea glabrifolia

• Red cedar Dipterocarp forest include: • Lagerstroemia tomentosa

• Mai daeng

• Mangifera sp.

• Magnolia floribunda

• Phayom

• Pterocarpus macrocarpus

• Shorea siamensis

• Siamese sal

• Tabaek

• Takian

• Yang na

Fauna
Mammel sorts include: • Asian elephant

• Bear

• Gibbon

• Hedgehog

• Malayan porcupine

• Mongoose

• Monkey

• Palm civet

• Sambar deer

• Tiger

• Wild boar Reptile  sorts include: • Asian leaf turtle

• Big-headed turtle

• Boa

• Cobra

• Green snake Birds of which species of passerines include: • Black occipital canary

• Bulbul

• Hill myna

• Richard's pipit

• Vernal hanging parrot Species of non-passerines include: • Fowl

• Hawk

• Pheasant

• Rufous-throated partridge

• Thick-billed green-pigeon