Man has had a real curiosity and fascination with caves, since the earliest times and north Clare is Ireland's most significant cave region.
The limestone region of the Burren is punctuated by a large number of underground streams which over millennia have carved out intricate caves systems along there length. In the Burren region only one river runs over ground through this terrain to reach the sea. Over 35 miles of cave passages have been surveyed in the region.
Doolin Cave located on the western edge of the Burren, encloses a stalactite measuring 6.54 metres (20 feet) in length, it is recognised as being the longest stalactite in the Northern hemisphere. The Ailwee Caves are also open to the public.