One of the most strenuous treks in Nepal, this route begins from Lukla, the doorway to the Sherpaland and heads towards the Arun valley. With three high altitude passes, the lowest of which is 5817 m, to be crossed it is truly for the free spirited and the adventurous. With amazing views of Makalu, Kanchenjunga, Lhotse, Baruntse, Pumori, Amadablam and a host of other peaks it is a true Himalayan escapade. Acclimatization is an essential part of this trek, which requires some technical climbing. The journey comes to an end at Tumlingtar which is connected to Kathmandu by air.