Hi David, Vasuki Tal via Tapovan is a trek with unique visuals where you walk over glaciers for miles & camp at the foot of towering Himalayan peaks like Mount Shivling. The trek has the highest altitude of 4800 M at Vasuki Tal and is graded as moderate to challenging. The trek involves crossing many glaciers and boulders and that makes this trek really thrilling and different from other treks. En route you get stunning views of peaks that pose a challenge to mountaineers such as Shivling, Thalay Sagar, Meru, and Bhagirathi I, II, III. The trail of Vasuki Tal Trek goes through Gaumukh - the source of mighty river Ganga and Tapovan - the gorgeous alpine meadow of religious significance for Hindus. Since this trek is still less explored, it gives the trekkers a unique chance of experiencing nature at its best. In order to Vasuki Tal Trek, you must have some prior experience of trekking in the Himalayas. The best time to do Tapovan and Vasuki Tal is May - June, and September - October.