Details

The site comprises an oval defensive enclosure dating to the Iron Age (100-
50BC) situated on the floodplain of the river Thames and on an island between
the main river and the Burroway Brook. The enclosing earthwork is broad with
the bank rising to about 1m above the surrounding area. Outside the bank is a
ditch c.5m wide and c.2m deep which has produced Iron Age pottery. Evidence
for burning exists in the form of burnt clay fragments on the surface of the
bank and charred wood within it. Three possible entrances have been
identified, on the east, north and west sides, the former containing evidence
for a "hornwork". Air photography suggests the presence of houses, pits and
ditches on the interior.

MAP EXTRACT
The site of the monument is shown on the attached map extract.

Source: Historic England

Reasons for Scheduling

Prehistoric enclosures on the floodplain of major rivers rarely survive in
such a complete state. The Burroway enclosure is considered to be of
considerable value, both for the well-preserved timber structures surviving in
the bank, and for the exceptional preservation of archaeological deposits on
the interior. Furthermore, from its position by the river and by comparison
with other sites, waterlogged deposits may be expected to survive in the
ditches. This being the case, the survival of environmental evidence would
provide a context within which the enclosure may be better understood.

Source: Historic England

Sources

Books and journals
Benson, D, Mile, D, The Upper Thames Valley: An Archaeological Survey, (1974)
Harding, D W, The Iron Age in the upper Thames Basin, (1972)
Sutton, J E G, IA Hilforts And Some Other Earthworks In Oxfordshire, (1966)
Other
Lambrick, G., Unpublished report and excavation archive,
SP 3000-1,

Source: Historic England