From a Historic England scheduling report (the decision was taken not to schedule the monument)

"Barrows, the most numerous of the various prehistoric funerary monuments, date from the Middle
Neolithic to the Middle Bronze Age. Bowl barrows begin to appear from before 3000 BC but the majority belong to the period 2400-1500 BC. They were constructed as earthen or rubble mounds, sometimes ditched, which covered single or multiple burials, and exhibit regional variations in form and a diversity of burial practices. They occur either in isolation or grouped as cemeteries, and often acted as a focus for burials in later periods. The majority of the round barrows from this period are bowl barrows. Bell, disc and pond barrows are considerably rarer.

The possible remains of a barrow lie approximately 340m west of Westenhanger Castle (scheduled
monument, NHLE 1020761). This feature is adjacent to the remains of another probable barrow, and
within a wider funerary landscape, being in the vicinity of the earthwork and buried remains of several other barrows mostly to the west of its site. It is located within an arable field bounded to the south by the East Stour River. The buried feature was first identified during a geophysical survey of the area in 2020 when it was recorded as rectilinear anomaly, with a smaller rectilinear anomaly on the north side. Subsequent trial trenching failed to locate either of these features, although two sections of ditch were located on a different alignment. It has been suggested that these diches represent the possible remains of a curvilinear barrow ditch. No datable material was recovered from the ditches. In recent archaeological investigations this is documented as barrow 263.

Details
PRINCIPAL ELEMENTS: the possible remains of a barrow dating to the Bronze Age.
DESCRIPTION: the geophysical survey results of this site showed a rectilinear anomaly with three sides and a further smaller rectilinear feature to the north. A trial trench was placed across both of these anomalies; neither of the features shown in the geophysical survey were recorded. Two ditches were found in the trench, one at the south end and the other near the middle; these were recorded as sections of possibly curvilinear ditches, which may represent a ring ditch and barrow-style feature. The southern section of ditch had shallow concave sides and a concave base, 0.67m wide and 0.15 m deep. The other section of ditch was 1.20m wide and 0.54m deep, with a steep concave sides a v-shaped base. No datable material was recovered from the ditches, although a total of eight flint fragments were recovered.."