cairns and lowland cairns may be passage tombs; monuments such as Shee Mór in County Leitrim, Heapstown in County Sligo and Croghaun, near Raphoe in County Donegal. Examples Newgrange Knowth Dowth Fourknocks Rathcoran Loughcrew Carrowkeel Carrowmore References Megalithic monuments in Ireland Burial monuments and structures in Ireland Tombs in the Republic of Ireland