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On the tongue of Vadret da Morteratsch, near the glacier portal, 2060 m.a.s.l.: Above the glacier portal [3] crevasses open [4], and an ice lamella will drop into the glacier stream. Up to 200 metres high are the lateral moraines [5] on both sides of the valley and mark the maximum ice thickness towards the end of the Little Ice Age around 1850. As debris slides off it, ice cores [2] inside the moraines gets exposed. The small lake on the left of the glacial stream [1] was formed by some stagnant ice left behind by the retreating tongue. Meltwater in the glacial stream is turbid due to the presence of fine sediment. |