Lamphun is in the Ping River valley. It is surrounded by mountain chains, with the Thanon Thong Chai Range in the west and the Khun Tan Range in the east of the province. It is some 670 kilometres north of Bangkok and 26 kilometres south of Chiang Mai. The total forest area is 2,588 km2 (999 sq mi) or 57.8 percent of the provincial area. Lamphun is regarded as the smallest province of northern region of Thailand. Under its old name of Haripunchai, Lamphun was the northernmost city of the Mon kingdom of the Dvaravati period, and also the last to fall to the Thai. In the late-12th century it came under siege from the Khmer, but did not fall. However, in 1281 King Mengrai of Lan Na finally seized the city, and made it part of his kingdom. After Burmese expansion in the 16th century, Lamphun was under Burmese rule for two centuries. In the 18th century, with the rise of Thonburi and Bangkok against Burmese rule, local leaders from Lampang agreed to be their allies. Lamphun was finally freed from the Burmese and ruled by relatives of Lampang's leader, gaining vassal status from Bangkok. Eventually, after the administrative reform of Bangkok government in the late-19th century, Lamphun became, as a province, a part of Siam. More information...
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