The karst limestone landscape of the Aran Islands and The Burren was formed by a Glacier during the Ice-Age which cleared the land of any plant and soil material leaving the bare rock exposed with grykes between the clints (rock plates). It has characteristic flora - both Alpine and Mediterranean such as Irish Marsh Orchid, Bloody Cranesbill and Burnet Rose.
We saw quite a few butterflies including Small Blue, Common Blue and Small Heath.
The limestone extends onto the beaches and is home to abundant Sea Thrift.
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