© Mapbox · © OpenStreetMap contributors · Boundary data © Historic England (NHLE)
Earth circles on St Martha's Hill is a prehistoric earthwork monument located near Guildford in Surrey. The site consists of concentric circular banks and ditches, characteristic of Neolithic or Bronze Age ritual or defensive structures, though precise dating remains uncertain. The monument occupies a prominent hilltop position, which would have made it visible across the surrounding landscape and suggests its significance as a territorial or ceremonial marker. The earthwork survives as a substantial landscape feature, though its original form and function—whether primarily defensive, ritual, or settlement-related—continues to be subject to archaeological interpretation.
Earth circles on St Martha's Hill is a scheduled monument protected by Historic England under reference 1002976. View the official record →
Earth circles on St Martha's Hill is a prehistoric earthwork monument located near Guildford in Surrey. It is designated a Scheduled Ancient Monument by Historic England (NHLE) under reference 1002976.
Earth circles on St Martha's Hill 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 1002976.
Several scheduled monuments lie within 10 km, including Chilworth gunpowder works (0.8 km), Bowl barrow 90m west of Tyting Farm (1 km), Bowl barrow at Newlands Corner (1.7 km).
This page is just one thread. A full Aubrey report pulls together 15 strands of Earth circles on St Martha's Hill'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.
Earth circles on St Martha's Hill stands on Lower Greensand Group, bedrock that formed in the Albian. The rock here is sandstone and mudstone.