🇬🇧 United Kingdom · Megalith
King Arthur's Stone (Herefordshire)
Early Neolithic · Cotswold-Severn
32-tonne Herefordshire Cotswold-Severn tomb — nine uprights under 25 m mound on Golden Valley ridge.
🇬🇧 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
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
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.