🇬🇧 United Kingdom · Megalith
Carreg Samson Dolmen
Early Neolithic (c.3800–3600 BCE) · Western Neolithic (Pembrokeshire)
Cliff-top portal dolmen near Abercastle harbour — massive capstone (4.7 m) on three orthostats with sea backdrop.
🇬🇧 United Kingdom · Megalith
Lligwy Burial Chamber
Early–Middle Neolithic (c.4000–3500 BCE) · Neolithic Anglesey (passage grave tradition)
Eastern Anglesey portal dolmen with colossal 25-tonne capstone (6.5 x 5.5 m) — one of Wales's heaviest.
🇬🇧 United Kingdom · Ancient village
Stonehall Farm Neolithic Village
Early to Late Neolithic (c.3600–2600 BCE) · Early Neolithic → Grooved Ware Orcadian Neolithic
Wideford Hill settlement with earliest Orkney timber houses (3600 BCE) and later stone village bridging Early–Late Neolithic.
🇬🇧 United Kingdom · Megalith
Unstan Chambered Cairn — Stenness, Orkney
Early Neolithic (c.3600–3200 BCE) · Orcadian Neolithic (Unstan Ware)
Unstan cairn (c.3600–3200 BCE, Early Neolithic) is a unique hybrid stalled-Orkney-Cromarty chambered cairn on a Loch of Stenness promontory 2 mi NE of Stromness, 13 m long dividing into five stalls…