Ganja La pass is situated at an altitude of 5106 meters. During the winter season, December to March, this pass is usually blocked with ice and crossing the pass at this time can be dangerous. The Ganja La is considered to be one of the most difficult passes to trek. It should not be attempted without a skilled guide, good equipments, and a good deal of mountaineering experience.
Please read Langtang Trekking for comprehensive itinerary.