🇬🇧 United Kingdom · Megalith
Boa Island Janus Figures
Iron Age (Celtic) · Pre-Christian Celtic / Iron Age Ireland
Iron Age janus idols (1.2 m double-headed) in Boa Island cemetery, Lough Erne — most enigmatic Celtic stones in Ireland.
🇬🇧 United Kingdom · Megalith
Hjaltadans (Haltadans) Stone Circle
Early Bronze Age · Shetland Bronze Age
Fetlar's 11-stone circle (~9 m) on moorland ridge — one of Shetland's few stone circles.
🇬🇧 United Kingdom · Megalith
Trethevy Quoit
Early Neolithic · East Cornwall Early Neolithic
East Cornwall's tallest quoit — 2.4 m uprights supporting capstone 3 m high with internal divider and rear window.
🇬🇧 United Kingdom · Megalith
Callanish III (Cnoc Fillibhir Bheag)
Late Neolithic · Hebridean Late Neolithic
Concentric double circle (13.7 m outer) with inner 4-stone ring and cairn, 500 m SE of Callanish I.
🇬🇧 United Kingdom · Megalith
East Kennet Long Barrow
Early Neolithic · Cotswold-Severn
Unexcavated long barrow southeast of Silbury Hill, 100 m longest in Avebury group, landmark within WHS.
🇬🇧 United Kingdom · Megalith
Gowk Hill Stone Circle
Late Neolithic – Early Bronze Age (2500–1500 BCE) · Recumbent Stone Circle builders
Gowk Hill stone circle on a ridge west of Insch, Aberdeenshire, an upland circle of eight granitic boulders enclosing a slight interior cairn, part of the Aberdeenshire recumbent circle concentration…
🇬🇧 United Kingdom · Megalith
Ring of Brodgar Outlier — Seat of Brodgar Farm Stone
Late Neolithic (2600–2500 BCE) · Orcadian Neolithic
Solitary outlier 80 m beyond Ring of Brodgar ditch, thought to mark northern lunar minor standstill sightline from henge centre.
🇬🇧 United Kingdom · Megalith
Stenness Annex — Watch Stone Monolith
Late Neolithic (3100 BCE) · Grooved Ware
Ness causeway outlier midway between two henges, with Bridge of Brodgar nearby, excavated causeway timber 2014.
🇬🇧 United Kingdom · Megalith
Barnhouse Stone — Standing Monolith Orkney
Late Neolithic · Grooved Ware
Outlier monolith 700 m NW of Barnhouse settlement and 800 m from Stones of Stenness, part of Heart of Neolithic Orkney ritual landscape.
🇬🇧 United Kingdom · Megalith
Callanish IV — Garynahine Stone Circle
Late Neolithic (2900–2600 BCE) · Late Neolithic Hebridean
Lewis's Callanish IV, 3 km S of Callanish I, with elliptical setting and cairn, excavated depression 1960s.