The Bhote Kosi is the steepest river rafted in Nepal. With a gradient of 15 m per km, it is a full eight times as steep as the Sun Koshi, which it feeds further downstream. The river carves a steep and direct drop at the top that gradually eases to more placid streams and the calmer pools with a 46-km run at the Lamosunga dam. The rapids here are class IV- V at high flow, and III at lower levels. The Bhote Kosi is used for both rafting and kayaking. The river is steep and continuous with one rapid leading into another. It is only a river which provides a facility for bungee jumping. This Bhote Koshi is the main branch of the Sun Koshi. The Araniko highway follows the river so access and scouting are relatively easy. The upper valley above Bahrabise is impressively narrow with steep hillsides shooting up over 2000m from the river.