Doi Luang Chiang Dao
Doi Luang Chiang Dao is located in the area of Chiang Dao wild life sanctuary. It is the 3rd highest limestone mountain in Thailand. Its height is about 2,225 meters from mean sea level. Doi Luang Chiang Dao is around 230-250 million years old. The rock texture is white-grey which come from sediment piling up which are formed with limestone. It is known that the Doi Luang Chiang Dao area was once a shallow sea.If looked at from aerial photographs, you will see the mountain ridge of Doi Luang Chiang Dao is horseshoe shaped encirclement. In the center is a narrow valley and around the line of the mountain is a sharp stone with chasms, and cracks which come from the chemical reaction of rain and limestone. There is a ravine called Ao Salung.