Slight univallate hillfort called Cadson Bury

Listed on the National Heritage List for England. Search over 400,000 listed places

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Overview

Heritage Category:
Scheduled Monument
List Entry Number:
1004494
Date first listed:
24-Oct-1950
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Official list entry

Heritage Category:
Scheduled Monument
List Entry Number:
1004494
Date first listed:
24-Oct-1950
Location Description:
Legacy Record - This information may be included in the List Entry Details.

Location

The building or site itself may lie within the boundary of more than one authority.

District:
Cornwall (Unitary Authority)
Parish:
St. Ive and Pensilva
National Grid Reference:
SX 34330 67384

Reasons for Designation

Slight univallate hillforts are defined as enclosures of various shapes, generally between 1ha and 10ha in size, situated on or close to hilltops and defined by a single line of earthworks, the scale of which is relatively small. They date to between the Late Bronze Age and Early Iron Age (eighth - fifth centuries BC), the majority being used for 150 to 200 years prior to their abandonment or reconstruction. Slight univallate hillforts have generally been interpreted as stock enclosures, redistribution centres, places of refuge and permanent settlements. The earthworks generally include a rampart, narrow level berm, external ditch and counterscarp bank, while access to the interior is usually provided by two entrances comprising either simple gaps in the earthwork or an inturned rampart. Postholes revealed by excavation indicate the occasional presence of portal gateways while more elaborate features like overlapping ramparts and outworks are limited to only a few examples. Internal features included timber or stone round houses; large storage pits and hearths; scattered postholes, stakeholes and gullies; and square or rectangular buildings supported by four to six posts, often represented by postholes, and interpreted as raised granaries. Slight univallate hillforts are rare with around 150 examples recorded nationally. They are important for understanding the transition between Bronze Age and Iron Age communities. The slight univallate hillfort called Cadson Bury survives well and will contain archaeological and environmental evidence relating to its construction, function, social organisation, territorial significance, trade, agricultural practices, domestic arrangements and overall landscape context.

Details

The monument includes a slight univallate hillfort, situated at and enclosing the summit of a prominent and very steep sided hill called Cadson Bury Down, overlooking the valley of the River Lynher. The hillfort survives as an oval enclosure measuring approximately 275m long by 170m wide internally defined by a single rampart of up to 2m high internally with outer ditch of up to 1.3m deep. The interior of the hillfort is largely level and occupies a commanding defensive position. There are two inturned entrances to the east and west and a southern staggered breach may also be an original third entrance. Cadsonbury was first recorded in the 13th century, and its earliest depiction was on Martyn's map of 1748. It was described by Lysons in 1814.

Sources: HER:- PastScape Monument No:-436704

Legacy

The contents of this record have been generated from a legacy data system.

Legacy System number:
CO 309
Legacy System:
RSM - OCN

Legal

This monument is scheduled under the Ancient Monuments and Archaeological Areas Act 1979 as amended as it appears to the Secretary of State to be of national importance. This entry is a copy, the original is held by the Department for Culture, Media and Sport.

Ordnance survey map of Slight univallate hillfort called Cadson Bury

Map

This map is for quick reference purposes only and may not be to scale. This copy shows the entry on 11-Jun-2026 at 23:24:06.

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© Crown copyright [and database rights] 2026. OS AC0000815036. Use of this mapping is subject to Terms and Conditions.

End of official list entry

All text content is available under the Open Government Licence v3.0 , except where otherwise stated. Any supplied maps are © Crown Copyright [and database rights] 2026 OS AC0000815036 and may not be reproduced without permission.

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