🇬🇧 United Kingdom · Megalith
Kilfeaghan Portal Tomb
Late Neolithic to Early Bronze Age · Portal Tomb
Low-set portal tomb above Carlingford Lough near Rostrevor, 35-40 ton capstone, among heaviest in Ireland.
🇮🇪 Ireland · Megalith
Kilclooney Portal Tombs
Middle Neolithic · Irish Portal Tomb tradition
Two portal tombs and court tomb at Kilclooney More, Ardara, capstone 30 tons, c.3500 BCE.
🇬🇧 United Kingdom · Megalith
Tinkinswood Burial Chamber
Early Neolithic · Severn-Cotswold Neolithic
Severn-Cotswold long cairn near Cardiff with Britain's largest capstone at 40 tonnes.