ESKER
Esker
An esker is a long, winding ridge of stratified sand and gravel, examples of which occur in glaciated and formerly glaciated regions of Europe and North America. Eskers are frequently several kilometres long and, because of their peculiar uniform shape, are somewhat like railway embankments.The above text is a snippet from Wikipedia: Esker
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esker
Noun
The above text is a snippet from Wiktionary: esker
and as such is available under the Creative Commons Attribution/Share-Alike License.