The rocks here at Annagh Head are millions of years old – the oldest rocks on mainland Ireland. The ancient rock called gneiss is similar to that found in Greenland and eastern parts of North America. When immense pressures under the Earth opened up the North Atlantic, Ireland became part of Europe, 80 million years ago. Ireland is still drifting away from North America at the rate of a millimetre a year. Around Ceann an Eanaigh, you might spot an endangered corncrake or hear its elusive ‘crex-crex’ call.