Chiang Mai Province’s Doi Chiang Dao Thailand’s third-highest peak and part of a Karst geological mountain range, has been made into new Unesco biosphere reserve. The Karst mountain range topography was formed from the dissolution of soluble rocks such as sedimentary rock. The statement was made at an on-line conference by Natural Resources Minister Varawut … Continue reading Chiang Mai’s Doi Chiang Dao Becomes Unesco Biosphere Reserve