The mountains are majestic and steep, with frequent glaciers, ice avalanches and avalanches. Especially the base camp to the No. 1 camp is covered by thousands of years of moraine and huge glaciers. The terrain is intricate, the route is long, the ice slope is large, and there are countless huge ice cracks. The average snow depth is 60-65 cm, and the ice slope is 75 degrees, which can reach 85 degrees or more in some areas. In addition to its 8,516 m (27,940 ft) main peak, Lhotse also has the following satellite peaks: Lhotse South, 8,426 m (27,644 ft) above sea level, is located in Nepal. Lhotse Middle Ⅰ, or Lhotse Middle, 8,410 meters(27,592 feet) above sea level, is located on the border between Tibet and Nepal. It was first summited by a Russian mountaineering team on May 23, 2001.