The Burren
Co Clare
The rolling hills of Burren are composed of limestone pavements with criss-crossing cracks known as "grikes", leaving isolated rocks called "clints". The region supports arctic, Mediterranean and alpine plants side-by-side, due to the unusual environment. The limestones, which date from the Visean stage of the Lower Carboniferous, formed as sediments in a tropical sea approximately 350 million years ago. The strata contain fossil corals, crinoids, sea urchins and ammonites.
Burren is rich with historical and archaeological sites. There are more than 90 megalithic tombs in the area, portal dolmens (includingPoulnabrone dolmen), a celtic high cross in the village of Kilfenora, and a number of ring forts - among them the triple ring fort Cahercommaun on the edge of an inland cliff, and the exceptionally well-preserved Caherconnell Stone Fort. Corcomroe Abbey is one of the area's main scenic attractions.
