Kuri Zampa to Mongar
The road to Mongar climbs through chir-pine forests up the eastern side of the Kuri Chhu valley. To the north you can see the road to Lhuentse traversing the side of the valley. This road leaves the Mongar road at Gangola, 12km before Mongar, and travels 65km to Lhuentse. The Mongar road climbs up and up through cornfields towards a cluster of houses on top of the hill.
Jakar to Mongar
It takes about seven hours to travel between Jakar and Mongar. The trip crosses two passes and takes in numerous sheer drops on what is one of the most spectacular drives in the country, descending 3200m in a distance of 84km. During winter the Thrumshing La is occasionally closed for a day or two during heavy snowfall.
Ura to Thrumshing La
Beyond the office of the Thrumshing La National Park, past the turn-off to the Ura–Jakar bypass, the main road crosses the small Lirgang Chhu on a bridge called Liri Zam to enter the territory of the national park. It climbs past overhanging cliffs and cedar trees, more often than not framed in mist, and crosses a ridge that is labelled Wangthang La on some maps.