Phetchabun Mountains

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The Phetchabun mountains ( Thai: ทิว เขา เพชรบูรณ์, Thio Khao Phetchabun, t ʰ k ʰ iw ǎw p ʰ ʰ ét.tɕ a.bu ː n ) forms a mountain range in northern Thailand. It extends roughly north-south direction and separates the valley of the Maenam Chaophraya in central Thailand from the Khorat Plateau in the northeast of the country. The mountain is named after the nearby town and Phetchabun province.

The Phetchabun mountain range consists of two parallel mountain ranges, which are separated by the valley of the River Pasak, the Western Khao Lang Non- Son and the east of the Pasak lying Dong- Paya Yen mountain range. To the south Dong Phaya Yen is the closes to the southeast, it goes into the mountains of Sankamphaeng where the Khao Yai National Park is located. This put further to the east in Phnom Dangrek mountain range continues that separates Thailand from Cambodia.

The highest peak is located at a height of 1794 meters in the National Park Phu Hin Rong Kla, in the western part of the mountain train. In the northern part there is the National Park Namtok Chat Trakan National Park Thung Luang Salaeng.

Geologically the mountains of limestone, interspersed with sandstone and shale. Also, there are igneous rocks, such as granite, basalt and porphyry.

Up to recent times the ridge formed along with the Dong Phaya Yen mountains and the Sankamphaeng a natural barrier between Central Thailand and Isan. Only when the railway was built from the capital Bangkok to Nakhon Ratchasima at the beginning of the 20th century and later a highway came to the exchange of goods and services on a large scale was possible.