Nam Nao National Park is located in Nam Nao District, Phetchabun Province

Phetchabun Province

Phetchabun is one of the northern provinces of Thailand. Neighboring provinces are Loei, Khon Kaen, Chaiyaphum, Lopburi, Nakhon Sawan, Phichit and Phitsanulok.- Geography :...

 in northern Thailand

Thailand

Thailand , officially the Kingdom of Thailand , formerly known as Siam , is a country located at the centre of the Indochina peninsula and Southeast Asia. It is bordered to the north by Burma and Laos, to the east by Laos and Cambodia, to the south by the Gulf of Thailand and Malaysia, and to the...

. It is situated 50 kilometres (31.1 mi) west of Amphoe Lom Sak

Amphoe Lom Sak

Lom Sak is a district in the northern part of Phetchabun Province, northern Thailand.-History:The history of Lom Sak area dates back to the founding time of the Sukhothai kingdom in the 13th century. The governor of Mueang Rat , Pho Khun Pha Mueang , was one of Thai warlords who defeated the...

. The park is a large forest still in its original state. It is filled with pineries, grasslands and virgin ungles. The park is home to more than 100 species of birds. The average annual temperature is 25 degree Celsius. The coldest month is November with temperatures as low as 0 degrees Celsius. Nam Nao NP is encompassed within a Level I TCU. It's area encompasses 1000 square kilometres (386.1 sq mi) in size.