Lake Merzbacher, trek 10 km, 4-5 h.
Breakfast at 9 am. We'll take our lunch boxes and leave at 10:00am. Trek across South Inylchek Glacier up to Lake Mertzbacher. The glacial terrain is covered in ice, rocks, sand, and mud. The trekking time both ways is 4-5 hours. Sandwiched between the northern and southern branches of the glacier lies the mysterious Lake Merzbacher, which forms every summer and then, sometime in August, bursts through the ice banks and the waters flow into the Inylchek River. (Actually, the timing varies – for example in 2012 it happened in July.) In reality, only part of the lake drains – the lake, which is 6 kilometers long and one kilometer wide, is in fact divided into two by a bridge of ice and while the lower half empties regularly, the upper part is always full of water. Also, the lakes empty twice a year – once in the summer and once in the winter – but most people only know about the summer event. In 1903 the German geographer and mountaineer, Gottfried Merzbacher, first discovered the lake while leading an expedition into the Tian Shan Mountains aiming to reach the summit of Khan Tengri. Forced back by ice, from their originally intended route through the Byankol Pass and along the Semyenov and Mushketov Glaciers, they attempted a different approach – along the Enilchek Glacier. Once again they failed, but they had shown that Khan Tengri was in fact on a ridge and not in the center of that particular knot of the Tian Shan Mountains as had been thought. The expedition will be better remembered, however, for the discovery of the mysterious lake that now bears Merzbacher’s name. Overnight in tents.