Chiang Mai Province of approximately . The mountains of the Daen Lao Range () at the north end of the province, the Thanon Thong Chai Range () stretching in a north-south direction, and the Khun Tan Range in the east of the province are covered by rain forest. The Mae Ping, one of the major tributaries of the Chao Phraya River, originates in the Daen Lao mountains. The highest mountain in Thailand, Doi Inthanon at , is in Chiang Mai Province. Several other national parks are also in the province: Doi Suthep-Pui, Ob Luang, Sri Lanna, Huai Nam Dang, Mae Wang, and Pha
Doi Toshikatsu of the first to be appointed to the newly created post of "Tairō" (Great Elder), and was made "daimyō" (feudal lord) of Koga Domain in Shimōsa Province, with a revenue of 160,000 "koku". Doi Toshikatsu The adopted son of Doi Toshimasa, Toshikatsu is generally believed to be the biological son of Mizuno Nobumoto, though there are some who claim he was an illegitimate son of shōgun Tokugawa Ieyasu. He served the shogunate as advisor to shōgun Tokugawa Hidetada for many years, and played an important role in communicating and overseeing the enforcement of shogunal policy across the country; Doi also