Part of my 3 week Annapurna circuit trek was a side trek to Tilicho Lake. The hike from Tilicho base camp to the lake was stunning! Surrounded by majestic mountains and glaciers, one of the most beautiful hikes ever! Watch out for falling rocks and landslides, this trek is dangerous. One rock hit my rucksack. Very cold wind and altitude sickness is a real hazard at ~5000m.