Longro La is an epic road in the Himalaya

Longro La is an international high mountain pass at an elevation of 4.340m (14,238ft) above the sea level, located on the Indo-China border.

Longro La

Set high in the Himalaya mountain range, the pass, also known as Langro La and Lungro La, links the Indian state of Arunachal Pradesh and Cona County, in the southern part of Tibet Autonomous Region in People's Republic of China. The challenging road to the summit is unpaved. Driver of the vehicle must be expert to drive on mountain terrain. As you go higher, you will be short of oxygen and your vehicle may not be your best companion to take you beyond a certain point. Due its situation, a special permit is required to visit the pass.
Tucked away in the Sumdorong Chu Valley, due to heavy snow fall most of the time this place remains closed. In winter it is extremely cold. If you travel by hire vehicle make sure the driver knows the place very well and is an expert in driving specially on snow covered roads. The pass is 70km (44 miles) long, running north-south from Khinzemane to Zemithang.
Pic: https://thenortheasttoday.com/states/arunachalpradesh/202-acres-sumdorong-chu-flash-point-to-give-india-strategic/cid2516226.htm