It measures just 6.4 metres across, defined not by any raised mound but by a shallow fosse, a cut ditch, that rings its circumference. This makes it a ditch barrow, a type of funerary monument in which the defining feature is the encircling trench rather than an earthen mound above a burial. The interior sits level with the surrounding ground, clear of overgrowth, which gives it an oddly tended appearance for something that has been here, in all likelihood, for thousands of years.

The fosse itself is modest by any measure, between 1.2 and 2.2 metres wide overall, narrowing to between 0.4 and 1 metre at its base, and only 0.1 to 0.15 metres deep. These are not dramatic earthworks. What is quietly notable is the precision of the form, a deliberate circle cut into low-lying ground that was presumably always prone to waterlogging, and the fact that it has survived at all in working pasture. Roughly 60 metres to the north-north-west lies a separate enclosed site, suggesting this corner of Moanmore was a place of some significance in the prehistoric landscape, with monuments clustering in ways that archaeologists still work to understand.