Doi Suthep large number of tourists is damaging the area's natural environment. Untreated waste water flows directly into the Huai Rap Sadet Waterfall. The annual Visakha Bucha pilgrimage up Doi Suthep leaves more than 30 tonnes of garbage in its wake. Doi Suthep Doi Suthep (ดอยสุเทพ), is a mountain ("doi") west of Chiang Mai, Thailand. It is in elevation and is one of the twin peaks of a granite mountain. The other peak is known as Doi Pui and is slightly higher (1,685 m). Doi Suthep is from Chiang Mai city centre. The vegetation below 1,000 m is mostly deciduous forest, with
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