Lá Fhéile Pádraig sona duit! ☘️ The Yorkshire Dales and Ireland's Burren share 340-million-year-old Carboniferous limestone. But the Dales have 2,500+ caves and 400+ km of passage. The Burren, ~56 caves, but 25,000 hectares of exposed limestone pavement vs. our 1,052. Same rock. Very different worlds. #geologyrocks #stpatricksday #yorkshiredales #theburren #ireland #limestone #karst