🇬🇧 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
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
Nether Largie South Cairn
Early Neolithic · Kilmartin Early Neolithic
Neolithic chambered cairn at Kilmartin Glen's north-central linear cemetery, c.3800 BCE, defining the glen's axis.
🇬🇧 United Kingdom · Megalith
Cairnbaan Cup and Ring Marks
Late Neolithic to Early Bronze Age · Kilmartin Late Neolithic
Cup-and-ring schist panels above Kilmartin Glen with >100 carvings, c.3000 BCE.
🇬🇧 United Kingdom · Megalith
West Kennet Long Barrow
Early Neolithic · Cotswold-Severn Neolithic
100 m Early Neolithic chambered long barrow near Avebury with five sarsen chambers under chalk mound.
🇬🇧 United Kingdom · Megalith
Arbor Low Stone Circle
Late Neolithic · Late Neolithic Peak District
Peak District henge enclosing 43 recumbent stones with 90 m bank-ditch and central cove, linked to Gib Hill barrow.
🇬🇧 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
Windmill Hill Causewayed Enclosure
Early Neolithic · Windmill Hill / Hembury Ware
Type-site causewayed enclosure 2 km from Avebury — three interrupted ditch circuits enclosing 8.5 ha.
🇬🇧 United Kingdom · Megalith
Belas Knap Long Barrow
Early Neolithic · Cotswold-Severn
Cotswold-Severn trapezoidal long barrow on Cleeve Hill with four chambers and false portal entrance.
🇬🇧 United Kingdom · Megalith
Ormaig Rock Art
Late Neolithic to Early Bronze Age · Kilmartin Late Neolithic
Forest clearing cup-and-ring cluster on Creag Mhor, 120+ motifs, c.3000 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
Rollright Stones
Early Neolithic to Middle Bronze Age · Cotswold Neolithic to Beaker
Neolithic-Bronze Age complex with King's Men circle, Whispering Knights dolmen and King Stone monolith on Cotswold ridge.
🇬🇧 United Kingdom · Geoglyph
Cerne Abbas Giant
Early Medieval 700–1100 CE per 2020 OSL; earlier prehistoric speculation revised · Late Saxon / Early Medieval Wessex (?)
55-m chalk giant with club on Dorset hill - maybe Saxon Hercules.
🇬🇧 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
Long Meg and Her Daughters
Late Neolithic to Early Bronze Age · Late Neolithic Cumbrian
Largest circle in northern England — 59-stone oval with 3.6 m outlier Long Meg bearing cup-and-ring spirals.
🇬🇧 United Kingdom · Megalith
Pentre Ifan
Early Neolithic · Preseli Early Neolithic
Wales' largest portal dolmen with 16-tonne capstone on three 2.4 m orthostats.
🇬🇧 United Kingdom · Megalith
Kit's Coty House
Early Neolithic · Medway Early Neolithic
Remnant chamber of Medway long barrow above River Medway — three sarsens supporting 3.5 m capstone.
🇬🇧 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.
🇬🇧 United Kingdom · Megalith
Wayland's Smithy
Early to Middle Neolithic · Cotswold-Severn
Two-phase Neolithic long barrow near Uffington with sarsen passage grave overlain on earlier oval mound.
🇬🇧 United Kingdom · Megalith
Bryn Celli Ddu
Late Neolithic to Early Bronze Age · Irish Sea Passage Tomb tradition
Anglesey passage tomb with 8.4 m passage aligned to midsummer sunrise and decorated spiral stone.
🇬🇧 United Kingdom · Megalith
Avebury
Late Neolithic · Windmill Hill / Late Neolithic Wessex
Largest megalithic stone circle in Europe (11.5 ha), enclosing outer bank and ditch and two inner circles. Village of Avebury sits partially within the monument.
🇬🇧 United Kingdom · Megalith
Dyffryn Ardudwy Burial Chamber
Early to Middle Neolithic · Irish Sea Neolithic
Double portal dolmen in Snowdonia foothills with two capstones sharing a mound near Cardigan Bay.
🇬🇧 United Kingdom · Megalith
St Lythans Burial Chamber
Early Neolithic · Severn-Cotswold
Portal dolmen near Cardiff with 35-tonne capstone on three orthostats, remnant of Severn-Cotswold long cairn.