You take an overnight Volvo (10-11 hours) from Delhi to Bhuntur (Himachal Pradesh) and another 1 hour from Bhuntur to Kasol in a local bus/cab. The trek starts next day from Barsheni (7-8 km further Kasol). Mantalai Lake Trek takes 7-9 days depending on where you decide to camp. Time-pressed ninetofivers that we are, our trek was for 7 days. After day 1 camping (@Kheerganga), we were without electricity, transport, food, water, toilets, roofs and civilization in general. We took our camps, sleeping bags, porters, guide, medicines, and some survival items. Not enough can be said about the peaceful and beautiful valley and trek. We drank river water, relieved ourselves in open, slept through rainfall and windstorm (1 night), crossed fallen trees, forest with bears (pug marks visible), crossed a broken bridge (one by one) that could collapse anytime, met saadhus (ascetics) who were trekking to the temple at the glacier, saw them performing some magic tricks for survival, went on without bathing for 6 nights and enjoyed every moment of it. Besides the unique cultural nuances of Kasol and hot water springs at Kheerganga, the trip also offered us glimpses of real, raw nature, unadulterated by anything or anyone. Next time I plan to go as far as to Pin Parvati.