Walk in the Mourne Mountains
Formation of the Mournes
The Mourne Mountains were formed 50million years ago, made of granite, an igneous rock. Over a series of ice ages they were carved by glaciers and on its last retreat 11,000yrs ago the ice produced the present day Mourne skyline with its U shaped valleys and corries.
Vast quantities of sand and stone were left on the coastal plain leaving the moraine and drumlin topography of County Down today. Many granite boulders were left isolated on the mountains by the retreating ice. Origionally the area was covered in broad leafed woodland, which was cut down and today the area is farmed lowland with sheep grazed heather hillsides.