Trans Bhutan Trail
The Trans Bhutan Trail is a 403-kilometre (250 mi) east–west trail in Bhutan, stretching from Haa to Trashigang and crossing 27 gewogs across nine dzongkhags. == Origins == Dating back to the 16th century, the trails, used by rulers, monks, pilgrims, traders and message carriers known as garps, were the only way to travel across Bhutan.