The driven across the Thumsingla pass and the subsequent descent from high altitude pine forest to lush pastures and orchards is one of the most exciting drives in all of the Himalayas. Gushing waterfalls, steep cliffs with even steeper drops, blazing flowers, and constantly changing vegetation combine to make this journey as varied as it is beautiful.

If the weather is clear the high eastern range of mountains comes into view from the top of the pass and in inclement weather misty mountain views across many peaks can be seen.

Eastern people speak a different dialect to westerners and they often cannot understand each other. The country is a more rugged and the population more sparse. However some of the best trekking can be made in the east of the country.

Certainly the most spectacular drive in Bhutan is the 20 kilometer of road between Sengor and naming on the eastern side of the Thumsingla Pass. Sheer drops of the thousand of metres, huge cascading waterfalls, endless turns and frequent fog from a rise in a temperature make for unnerving but exhilarating travel. After dropping 20000 meters through snow and ice to a relatively mild climate, travelers pass citruss groves only an hour after being immersed in pine forest.