The Mullaghmore Sandstone is exposed in three principal areas:
1. The base of the Mullaghmore Sandstone is exposed at Creevagh Head, and it crops out frequently in small quarries on the hill to the west of Rathlackan.
2. The upper part is exposed on the west side of Kilcummin Head.
3. The east side of Ross, forming the rocks into which the Killala Gabbro was intruded.
The uppermost part of the Mullaghmore Sandstone at Kilcummin Head.
This site information was researched, written and illustrated by our esteemed colleague, Conor MacDermot RIP