Chiang Mai is the second largest Province (changwat) of Thailand. It lies in upper northern Thailand and has a population of 1.78 million people. It is bordered by Chiang Rai to the northeast, Lampang and Lamphun to the south, Tak to the southwest, Mae Hong Son to the west, and Shan State of Burma to the north. The capital, Chiang Mai, is 685 kilometres (426 mi) north of Bangkok.
Pa Hin Ngam is a national park in Chaiyaphum Province, Thailand. "Hin ngam" means "beautiful stone", "pa" means "forest". The park got its name from the strange rock formations at the west end of the park. Erosion has carved several large rocks into striking and unusual shapes.
The Phetchabun mountains are a mountain massif in Phetchabun, Phitsanulok, Loei and Chaiyaphum Provinces, Thailand. It consists of two parallel mountain chains, with the valley of the Pa Sak River in the middle.
Dong Phaya Yen or Dong Phya Yen is a mountain range in Phetchabun, Chaiyaphum, Lopburi, Saraburi, and Nakhon Ratchasima Provinces, Thailand.
The Yom River is a river in Thailand. It is the main tributary of the Nan River. The Yom River has its source in the Phi Pan Nam Range in Pong District, Phayao Province. Leaving Phayao, it flows through Phrae and Sukhothai as the main water resource of both provinces before it joins the Nan River at Chum Saeng District, Nakhon Sawan Province.
Song is the northernmost district (amphoe) of Phrae province, northern Thailand.
Wang Thong is a district (amphoe) of Phitsanulok province, central Thailand.
Thung Salaeng Luang National Park is a 1,262 square kilometres (487 sq mi) national park in Phitsanulok and Phetchabun Provinces of Thailand. It encompasses substantial portions of Wang Thong and Lom Sak Districts.
Khwae Noi National Park is a national park in Chat Trakan, Nakhon Thai, Wang Thong and Wat Bot districts in Phitsanulok Province, Thailand, it was formerly known as Kaeng Chet Kwae National Park.
Kaeng Suea Ten Dam was a dam proposed for a site in the Phi Pan Nam Range, in Song District, Phrae Province, Thailand. It is near Mae Yom National Park, in a rural area of the Thai highlands.
Ramkhamhaeng National Park is a national park in Thailand.
Nam Nao National Park is a protected area in Phetchabun Province in northern Thailand. The park is a large forest filled with pineries, grasslands, and jungle. The park is home to approximately 360 species of birds and 340 species of butterflies. The average annual temperature is 25 degrees Celsius (77°F). Between December and January temperatures drop to as low as 2-5 degrees Celsius (36-41°F). Nam Nao National Park is part of a Level I "tiger conservation unit" (TCU). It encompasses 1,000 square kilometres (390 sq mi).
The Khao Kho National park is located in Lom Kao, Lom Sak, Khao Kho and Mueang Phetchabun districts in Thailand's Phetchabun province. The national park covers an area of 483 square kilometres (186 sq mi) and was established in 2012.
The Phi Pan Nam Range, also Pee Pan Nam, is a 400 km (249 mi) long system of mountain ranges in the eastern half of the Thai highlands. It is mostly in Thailand, although a small section in the northeast is within Sainyabuli and Bokeo Provinces, Laos.
Lam Nam Nan National Park is a national park in Thailand's Phrae and Uttaradit provinces. The national park covers an area of 999 square kilometres (386 sq mi) and was established in 1998, it is home to rugged mountains and the reservoir of the Sirikit Dam.
Mae Wa National Park is a national park in Thailand's Lampang and Tak provinces. This mountainous park features scenic mountain viewpoints, waterfalls and caves.
Khun Phawo National Park is a national park in the Mae Ramat District, Tak Province, Thailand.
The Northern Thailand–Laos moist deciduous forests ecoregion follows the upper course of the Nan River in northern Thailand and the Mekong River in Laos. This area has the highest proportion of tree cover in Thailand, with many forests dominated by Teak. The river valleys have been under pressure from human use: agriculture, teak plantations, and hunting have reduce plant and animal presence.
Ton Sak Yai National Park is a national park in Nam Pat, Tha Pla, Thong Saen Khan and Mueang Uttaradit districts in Uttaradit Province, Thailand, it was formerly known as Khlong Tron National Park.
