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Drumlins of Clew Bay

County Mayo, Ireland

Drumlins of Clew Bay

One of the most common landforms left by ice sheets across Ireland is the drumlin. Most people are familiar with the whaleback topography of these elongated and aligned small hillocks which dominate the landscape in large areas of Cavan, Monaghan and adjoining counties.

Clew BayClew Bay has a drumlin field which has been partly drowned by sea level rise, making small islands out of the individual drumlins, a good example of a 'drowned drumlin' landscape where the drumlins appear as islands in the sea, forming a 'basket of eggs' topography.

Text: Geological Survey of Ireland

100 Great Geosites

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Images (top to bottom):

  • Clew Bay Drumlin Field from the air © Duncan Hornby (Source Wikimedia Commons) Public Domain
  • Drumlin at low tide © Brendanconway (Source Wikimedia Commons) Public Domain
Earth Science Week 2017

Earth Science Week
October 7-15
Theme: 'Our Restless Earth'