Devil’s Chimney (Sruth in Aghaidh an Aird in Irish Gaelic) is claimed to be the tallest waterfall in Ireland near Glencar Lough though it has fickle flow.

Glencar Waterfall is a popular excursion on the north shore of Glencar Lough by the county Sligo/Leitrim border from the Devil’s Chimney on the Sligo side.