🇬🇧 United Kingdom · Megalith
Holm of Papa Westray South Cairn
Early Neolithic · Orkney Early Neolithic (Bookan tradition)
10 m round Bookan-type chamber with three cells, 200 m south of paired North long cairn.
🇬🇧 United Kingdom · Megalith
Ballyalton Court Tomb
Early Neolithic · Irish Court Tomb
Rock-outcrop court tomb east of Downpatrick, type site for Ballyalton bowls, c.4000 BCE.
🇬🇧 United Kingdom · Megalith
Blackhammer Chambered Cairn
Early Neolithic · Orkney Cromarty stalled tradition
Rousay stalled cairn — 13 m seven-compartment chamber under 22 m mound on south coast.
🇬🇧 United Kingdom · Megalith
Pettigarths Field Cairn
Middle Neolithic · Shetland Neolithic
Heel-shaped chambered cairn on Whalsay, 15 m, part of Yoxie settlement complex, c.3500 BCE.
🇬🇧 United Kingdom · Megalith
Dunchraigaig Cairn
Early Neolithic to Early Bronze Age · Kilmartin Early Neolithic / Beaker
Chambered cairn beside A816 with three Bronze Age cists and 2021 animal carvings discovery.
🇬🇧 United Kingdom · Megalith
Barclodiad y Gawres
Late Neolithic · Irish Sea passage grave tradition
Anglesey cruciform passage grave with spiral-decorated stones and 27 m cairn on coastal headland.
🇬🇧 United Kingdom · Megalith
Maeshowe Chambered Cairn
Late Neolithic · Grooved Ware Orcadian
Finest Orkney chambered cairn: 36 m mound, long passage, corbelled chamber. Midwinter sunset illuminates chamber. Bears 12th-century Viking runic inscriptions (>30).