The Bhote Kosi / Upper Sun Kosi (during high water) is without a doubt the most action-packed white water run in Nepal. The river drops off steeply providing continuous stretches of powerful class III-IV white water. Boulder gardens, small waterfalls, steep chutes and 90-degree bends present a multitude of hazards to be negotiated. The Bhote Kosi it is a technical river requiring an active crew.