 Evidence has been discovered of a Neolithic axe quarry at the foot of Tievebulliagh.Flint axe heads fashioned from porcellanite that originate from this quarry have been found across the British Isles, from the Outer Hebrides to the south coast of England and across the rest of Ireland.The site compares with the Langdale axe industry based in the English Lake District and the quarries at Penmaenmawr in North Wales, where large numbers of stone axes were manufactured.