Doi Ang Khang Doi Ang Khang Doi Ang Khang () is a mountain in Fang District, Chiang Mai Province, Thailand. It is part of the Daen Lao Range that straddles both sides of the Burmese-Thai border. It is the site of an agricultural station, the first research station set up by King Bhumibol Adulyadej in 1969. The peak of Doi Ang Khang is above sea level, and the agricultural station covers an area of 1,989 "rai" (318 ha). The temperature average is 17.7 °C. The highest temperatures range from 35-38 °C in April. The lowest temperature recorded is -3 °C in January. The
Highest unclimbed mountain in Bhutan or on the Bhutan-China border is the tallest mountain in the world that has yet to be fully summited. Gangkhar Puensum has been off limits to climbers since 1994 when Bhutan prohibited all mountaineering above due to spiritual/religious beliefs. Unclimbed mountains are sometimes referred to as "virgin peaks". Many virgin peaks exist because the mountain is unreachable, due to either geographic isolation or political instability. Some mountains remain off limits due to religious beliefs of a country or region that hold such mountains are sacred and should remain inviolate. Additionally, since the endeavor to scale taller mountains of