Black Mountains is truly considered as a border between the western regions and the other regions of Bhutan, particularly the Central region. The region Central Bhutan includes Trongsa and the rich broad valleys of Bumthang including Chumey, Choekor, Tang and Ura valleys. The passes crossed are Yotong la (3425m/11,237ft) and Thrumshing la (3780m/12,40ft).
This region is known for its buckwheat and apple production, its sturdy stone houses and its plethora of monasteries. It’s the ideal place for walking due to its broad valleys and sloping mountains. The beauty of the Bumthang valley is legendary. And it is believed to be the first part of Bhutan to have been inhabited, with evidence of prehistoric settlements in the Ura valley of Bumthang and the southern region of Khyeng.