Great Aletsch Glacier in Switzerland

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 No matter whether you are at Moosfluh, Bettmerhorn or Eggishorn, the view of the Aletsch Glacier is unique: you can admire the glacier from up above with a gorgeous view of the enormous stream of ice. This is quite unusual because anywhere else in the Alps you usually have to look up to a glacier. Another impressive fact about the Aletsch Glacier is its length: at about 23 kilometers (14¼ miles), the Aletsch Glacier is the longest stream of ice in the Alps. The catchment area in the Jungfrau region lies at about 4,000 m (13,124 ft) above sea level; the glacier cave in the Massa gorge is about 2,500 m (8,202 ft) lower.

The Aletsch Glacier is the largest glacier in the Alps, with a length of 23 kilometers (14 miles).
The typical trademark of this glacier is the set of two medial moraines, which are the result of three smaller glaciers converging at the Konkordiaplatz, where the ice sheet is said to be 900 meters thick.
The three glaciers are the Aletschfirn, the Jungfraufirn and the Ewigschneefäld.
Another fourth glacier converges at the Konkordiaplatz, the Grüneggfirn, but being a much smaller glacier, its flow is dwarfed and obliterated but the sheer flow of ice coming from the Ewigschneefäld.