A long, winding ridge of sand and gravel left behind by a river of meltwater that once flowed within or beneath a glacier, standing as a raised landform once the surrounding ice melts away and leaves the former channel's sediment fill exposed. Eskers can extend for many kilometres and trace the former path of subglacial drainage.
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Wikidata: Esker
Wikidata Q26718729, class allow-list match (w-wdresolver-0926)View the Source Esker - Wikipedia
Shaped By: Deposition and Sedimentation, LeadQuote, Shaped By: Deposition and Sedimentation, Lead
They are most often formed by the deposition of sediment at the bottom of ice-walled channels within or beneath a former glacier.
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