SNIPPET: The coast of Co. Antrim is the only place in Ireland where chalk outcrops are found, creating steep white cliffs that are reflected in the local place-names -- i.e., Larrybane ("bane" means "white" in Gaelic) and the White Rocks. Ireland's only World Heritage site is the Giant's Causeway on the Co. Antrim coast, one of nature's truly great wonders. It is a honeycomb of thousands of columns with between three to nine sides that came into being when basalt flows began to cool into these curious shapes some 60 million years ago. Legend holds that it was built by the great folk her Fionn MacCumhail (or Finn McCool), his name also associated with the other striking occurrence of this phenomenon - the Hebridean island of Staffa, where Fingal's Cave provided the title and the inspiration for Mendelssohn's famous overture. Geographically impressive in a different way are the Cliffs of Moher on the Atlantic face of Co. Clare, where they rise to a height of almost 700 feet and create a series of headlands receding one behind the other along an eight-mile stretch of coast. Limestone forms the base for the superimposed flat beds of sandstone and shale above, the former recognisable through the tortuous worm casts of the Liscannor flags used on many an Irish floor, both inside and out. Here, too, legend has played its role in the stories told about Maire Rua, Red Mary O'Brien of Leamaneagh, sought after by so many suitors that she resorted to sending each off on a horse to be tamed. Speeding across the Cliffs of Moher, the horse would then toss its rider into the Atlantic waves below.