Amphu Labtsa pass, elevation 5,845 metres (19,177 ft), is a glaciated pass covered in serac cliffs at the head of the Honku valley. It provides a way out of the otherwise relatively isolated Honku valley. The base of the valley is at 5,000 m (16,400 ft) and has several glacial lakes including the Panch Pokhri or Five Sacred Lakes. The Amphu Labtsa pass is crossed by mountaineers en route to Island Peak or Baruntse expeditions and involves technical mountaineering.