Archaeological site

Carns Cairn

Ireland County Sligo national monument of Ireland
Wikipedia Wikidata

About

The cairn is believed to date back to c. 3000 BC, the Neolithic, making it contemporaneous with Miosgán Meadhbha atop Knocknarea.

The cairn is a large flat-topped cairn 60 m (200 ft) by 55 m (180 ft) across and 7 m (23 ft) high.