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Updated: June 15, 2025
Soon they plunge into deep wells cut by their whirling waters where some crevasse has begun to open across their path. These wells lead into chambers and tunnels by which sooner or later their waters find way to the rock floor of the valley and there unite in a subglacial stream. THE LOWER LIMIT OF GLACIERS. The glaciers of a region do not by any means end at a uniform height above sea level.
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