moraine

a mound, ridge, or other distinct accumulation of glacial till.
Lateral and terminal moraines of a valley glacier, Bylot Island, Canada. The glacier formed a massive sharp-crested lateral moraine at the maximum of its expansion during the Little Ice Age. The more rounded terminal moraine at the front consists of medial moraines that were created by the junction of tributary glaciers upstream. (Photo courtesy of the Natural Resources Canada. Copyright Terrain Sciences Division, Geological Survey of Canada.)
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