The lowest point is located in the Drangme Chhu, a river system in central and eastern Bhutan, at above sea level. The lowest point is located in eastern Sarpang District where the Mangde Chhu river crosses into India (Assam) near the Indian town of Manas.
Highest attainable by transportation
Road (mountain pass): The Lateral Road, the main eastâÂÂwest highway, traverses Trumshing La in central Bhutan at an altitude of over .