Prehistoric regular aggregate field system with incorporated and adjacent stone hut circles and an adjacent enclosure 550m WSW of Trewalla Farm


Heritage Category: Scheduled Monument

List Entry Number: 1009731

Date first listed: 04-Jun-1992


Ordnance survey map of Prehistoric regular aggregate field system with incorporated and adjacent stone hut circles and an adjacent enclosure 550m WSW of Trewalla Farm
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The building or site itself may lie within the boundary of more than one authority.

District: Cornwall (Unitary Authority)

Parish: St. Cleer

National Grid Reference: SX 24059 70941


Legacy Record - This information may be included in the List Entry Details.

Reasons for Designation

Bodmin Moor, the largest of the Cornish granite uplands, has long been recognised to have exceptional preservation of archaeological remains. The Moor has been the subject of detailed archaeological survey and is one of the best recorded upland landscapes in England. The extensive relict landscapes of prehistoric, medieval and post-medieval date provide direct evidence for human exploitation of the Moor from the earliest prehistoric period onwards. The well-preserved and often visible relationship between settlement sites, field systems, ceremonial and funerary monuments as well as later industrial remains provides significant insights into successive changes in the pattern of land use through time.

Elaborate complexes of fields, field boundaries and enclosures are a major feature of the Moor landscape. Regular aggregate field systems are one of several methods of field layout known to have been employed in south-west England from the Bronze Age to the Roman period (c2000 BC - AD 400). Regular aggregate field systems comprise a collection of field plots defined by boundaries laid out in a consistent manner, along two axes set at right angles to each other. By contrast with field systems, enclosures are discrete plots of land constructed as stock pens or as protected areas for crop growing. Both the field systems and enclosures are bounded by stone or rubble walls or banks, ditches or fences. They are often located around or near settlement sites. Such settlements frequently comprise stone hut circles, which were the dwelling places of Prehistoric farmers on the Moor. Mostly dating from the Bronze Age (c2000 - 700 BC), the stone-based round houses consist of low walls or banks enclosing a circular floor area; remains of a turf or thatch roof are not preserved. The huts occur singly or in groups and may occur in the open or enclosed within field systems or enclosures. Each of these types of monument forms an important element of the existing landscape and is representative of its period. Their longevity of use and their relationships with other monument types provide important information on the diversity of farming practices and social organisation among Prehistoric communities.

This monument on the southern slope of Tregarrick Tor has survived reasonably well. Only limited robbing has taken place from its western edge and despite the truncation of its SE edge by a tin-streamers' cut, the field system retains a diverse range of inter-related features and preserves unusual evidence for its gradual expansion along the valley, illustrating well the methods and development of contemporary farming practices. The proximity of the monument to other broadly contemporary hut circles, enclosures and field systems, and to the major area of ritual monuments on Craddock Moor, also demonstrates well the organisation of settlement and land use during the Bronze Age.


Legacy Record - This information may be included in the List Entry Details.


The monument includes a well-preserved Prehistoric regular aggregate field system with eleven stone hut circles and an adjacent rectangular enclosure and hut circle, situated near broadly contemporary unenclosed hut circles, enclosures and cairns on the lower southern slope of Tregarrick Tor on SE Bodmin Moor. The regular aggregate field system comprises at least twenty sub-rectangular field plots, ranging 0.015 - 0.3 hectares in extent and surviving over a total area of 3 hectares. The fields survive with largely straight rubble walls up to 2m wide and 1m high, incorporating numerous large boulders and frequent edge-set facing slabs. Some lengths of walling also contain rows of end-set slabs, called orthostats, which project above the walls, reaching a maximum height of 1.5m. In the eastern half of the field system the plots are small and cluster into adjoining, almost square, blocks of fields, of 0.15 - 0.4 hectares, bounded and subdivided by walls running ENE-WSW along the contour of the slope, and NNW-SSE directly down the slope. At least five such blocks survive, the junctions between the easternmost three showing them to have been successively created up the side of the valley. In the western half of the field system the plots are generally larger, lacking the block structure of the eastern half, and the dominant axes of the field boundaries become north-south and east-west by the system's western edge, corresponding to the change in aspect of the hillslope. This field system contains ten stone hut circles, with an eleventh situated 2m beyond its eastern boundary wall. All are levelled into the hillslope and survive with circular boulder and rubble walls up to 2.5m wide and 1.5m high, enclosing internal areas ranging 5m - 9m in diameter. Six of the hut circles have facing slabs along the inner, outer or both sides of their walls and six have surviving entrance gaps, orientated variously between south-east and south-west and flanked in two cases by orthostats. The largest hut circle is sited centrally in one of the eastern blocks of fields and has a small, rubble-walled, semi-elliptical porch built out from its southern entrance. Another hut circle occupies an analogous position in the adjoining block to the east but otherwise the hut circles are variously positioned against field walls or unattached in the interior of field plots. Two hut circles in the western half of the field system are linked by a curving wall that forms one side of a short trackway along the lower edge of one field plot. In one of the eastern field blocks, another short, wall-lined trackway links a hut circle to the block's eastern edge. The rectangular enclosure is situated 13m north, uphill, from the central part of the field system but is not linked to it by walling. It is visible as a boulder and rubble wall, up to 2m wide and 1m high, enclosing a rectangular area of 0.25 hectares, measuring 42m east-west by 55m north-south. A similar rubble wall extends for 26m NNW from the enclosure's NW corner, ending 3.5m south of a small stone hut circle. This hut circle has a boulder wall, 1m wide and 0.5m high, with an entrance gap facing south and encloses a levelled interior 2.5m in diameter. The northern, uphill, sides of most field boundaries and hut circle walls in the monument are covered by substantial deposits washed down the hillslope since their construction. The western half of the monument borders on an area of improved pasture, which, together with the building of modern stone walls, has produced some limited stone-robbing from the Prehistoric walls in this zone, while the south-east edge of the monument is defined by the scarp of a medieval tin miners' cut flanking the stream running along the valley floor. The modern dry-stone walling, gate and post-and-wire fencing are excluded from the scheduling but the ground beneath is included.

MAP EXTRACT The site of the monument is shown on the attached map extract. It includes a 2 metre boundary around the archaeological features, considered to be essential for the monument's support and preservation.


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

Legacy System number: 15095

Legacy System: RSM


7/1991, Cornwall SMR entry for PRN 1243,
7/1991, Cornwall SMR entry for PRN 1243.11,
Consulted 7/1991, Carter, A./RCHME, 1:2500 AP transcriptions for SX 2370 & SX 2470,
Consulted 7/1991, Carter, A./RCHME, 1:2500 AP transcriptions for SX 2470 & SX 2471,
Consulted 7/1991, Cornwall SMR entry for PRN 1243.05,

End of official listing