Geology and Wildlife
The cliffs consist mainly of beds of Namurian shale and sandstone, with the oldest rocks being found at the bottom of the cliffs. It is possible to see 300 million year-old river channels cutting through, forming unconformities at the base of the cliffs.
There are an estimated 30,000 birds living on the cliffs, representing more than 20 species. These include Atlantic Puffins, which live in large colonies at isolated parts of the cliffs and on the small Goat Island. Also present are hawks, gulls, guillemots, shags, ravens and choughs.
Read more about this topic: Cliffs Of Moher
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