Langtang the Ganja-La pass is one of the most challenging passes in Nepal, it is a standout and a true challenge.located northwest of The Kathmandu Valley in the Langtang region.The trek offers, great perspectives of the mountains,a chance to live in old religious communities, beautiful Langtang and Helambu valleys,full of natural bird and wildlife.The route over the Ganja La Pass Trek takes you from the busier trails of the Langtang region to the quaint trails of Helambu )it provides an opportunity to be amid pristine nature for a day or two.