Windswept hawthorn tree growing on earth ramparts at Castle an Dinas iron age hillfort, Cornwall, England, United Kingdom, Europe

Misty autumn morning above Cadbury Castle Iron Age Hillfort, Cadbury, Devon, England, United Kingdom, Europe

Aerial view of the famous White Horse below Bratton Camp, an Iron Age hillfort near Westbury, Wiltshire, England, United Kingdom, Europe

Cadbury Castle Iron Age Hillfort at dawn in spring, Cadbury, Devon, England, United Kingdom, Europe

Carl Walk Hillfort from Over Owler Tor at dusk, Hathersage Moor, Peak District National Park, Derbyshire, England, United Kingdom, Europe

Iron-age hillfort of Hambledon Hill at sunset, Cranborne Chase AONB (Area of Outstanding Natural Beauty), Iwerne Courtney (Shroton), Dorset, England, United Kingdom, Europe

Aerial vista of Cadbury Castle Iron Age Hillfort, Devon, England, United Kingdom, Europe

Castell Henllys Iron Age village in the autumn, constructed by the Pembrokeshire Coast National Park, Pembrokeshire, Wales, United Kingdom, Europe

View from Crickley Hill Country Park near Gloucester and Cheltenham, site of Neolithic Iron Age Hillfort, Gloucestershire, England, United Kingdom, Europe

View from Crickley Hill Country Park near Gloucester and Cheltenham, site of Neolithic Iron Age Hillfort, Gloucestershire, England, United Kingdom, Europe