Ban Ta Khun district
Ban Ta Khun is an amphoe in western Surat Thani province, southern Thailand. It is the largest district of the province and has the lowest population density.
Geography
Most of the district is in the hills of the Phuket Range, with parts being protected in Khao Sok National Park and the Khlong Saeng Wildlife Sanctuary. Mostly in Ranong Province is the Khlong Nakha Wildlife Sanctuary, which occupies the northwestern corner of the district.The main river of the district is the Khlong Saeng, which is dammed by the Ratchaprapha Dam to form the Cheow Lan reservoir. It empties near the town Khao Wong into the Phum Duang River.
Neighboring districts are : Tha Chang, Vibhavadi, Khiri Rat Nikhom and Phanom of Surat Thani; Khura Buri of Phang Nga province; and Suk Samran and Kapoe of Ranong province.
History
The district was created on 20 July 1973 as a minor district by splitting off five tambons from Khiri Rat Nikhom.On 9 September 1976 the minor district was elevated to full district status.
The fifth tambon Krai Son was later merged into Khao Phang, as it was in the area flooded by Cheow Lan lake.