It is visible not to the eye on the ground but only from the air, rendered legible by the way crops grow differently above disturbed or filled-in soil. This kind of cropmark, where a buried ditch or fosse causes the vegetation above it to ripen at a different rate, can preserve the outline of features that have otherwise vanished entirely from the landscape. At Foulksrath, that outline amounts to roughly twenty metres of curving fosse, photographed on 10 July 1973 as part of the Cambridge University Collection of Aerial Photographs.

What makes the site more than a footnote is its relationship to the surrounding landscape. The curving fosse lies approximately fifteen metres south of a ring-ditch, a term for the circular trench that once accompanied a burial mound, typically from the Bronze Age, and which often survives only as a cropmark long after the mound itself has been ploughed away. More striking still is the density of similar features nearby; a cluster of ring-ditches has been identified in the immediate vicinity, suggesting that this part of the Nore valley was once a significant funerary or ritual landscape. The curving fosse may represent the remnant of a larger enclosure that once surrounded or incorporated the ring-ditch beside it, implying a more complex arrangement than a single monument in isolation. Whether the fosse and the ring-ditch belong to the same period of activity remains uncertain, though the spatial relationship between them invites the possibility.