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Two concentric ditches showing as crop marks at Thorney is an Iron Age enclosure located in Buckinghamshire. The monument comprises two roughly circular ditches visible as crop marks in aerial photography, a common means of detecting archaeological features in lowland England where subsurface remains leave traces in vegetation and soil moisture patterns. The concentric ditch arrangement is characteristic of Iron Age settlement and defensive structures, suggesting occupation or ritual significance during the pre-Roman Iron Age period. The site's preservation as crop marks rather than upstanding earthworks indicates that ploughing and subsequent agricultural use have levelled the original topography, making aerial and geophysical survey essential for understanding its layout and function.
Two concentric ditches showing as crop marks at Thorney is a scheduled monument protected by Historic England under reference 1006944. View the official record →
Two concentric ditches showing as crop marks at Thorney is an Iron Age enclosure located in Buckinghamshire. It is designated a Scheduled Ancient Monument by Historic England (NHLE) under reference 1006944.
Two concentric ditches showing as crop marks at Thorney is a Scheduled Ancient Monument, legally protected by Historic England (NHLE) — the body responsible for designating and safeguarding heritage sites in England. The official designation reference is 1006944.
Several scheduled monuments lie within 10 km, including Schoolhouse (Lord Knyvett's) (5.6 km), Romano-British site 1000yds (910m) W of East Bedfont parish church (6.8 km), Early medieval and medieval palace and associated monuments, Kingsbury (7.1 km).
This page is just one thread. A full Aubrey report pulls together 15 strands of Two concentric ditches showing as crop marks at Thorney's history, each drawn from the record and mapped to the exact spot:
Every location is different. Not every section appears for every place, only what the historical record actually holds turns up in a report.
Two concentric ditches showing as crop marks at Thorney stands on Thames Group, bedrock that formed in the Eocene. The rock here is clay, silt, sand and gravel.