This is a ring-barrow, a type of Bronze Age funerary monument consisting of a central raised platform encircled by a flat-bottomed ditch and an outer bank, the whole ensemble functioning as a formalised space around a burial mound. At Leny, the central platform rises only 0.35 metres above the surrounding ditch, and the outer bank, though better preserved on its north-eastern side, stands no more than half a metre above the ditch floor. The subtlety is the point: what looks like unremarkable agricultural ground resolves, on closer inspection, into a carefully engineered circular form.

A 2012 survey by McGuinness found the monument in an uneven state of preservation. The south-western side has been considerably disturbed, partly by what appears to be an old grassed-over trackway, roughly four metres wide, cutting across the barrow on a north-west to south-east alignment and heading roughly in the direction of Leny church at the foot of the hill. Aerial photography suggests this feature, along with a similar linear earthwork just to the north-east, represents old field boundaries that predate the first edition Ordnance Survey six-inch map, meaning they are themselves historic, even if they post-date the barrow by millennia. The surroundings add further complexity. Sixteen metres to the north-west sits a low oval mound, possibly artificial, clipped by an old quarry. Two recumbent stones recorded nearby have been classified as possible standing stones, though both lie flat, deeply embedded in the sod, and it is uncertain whether either was ever upright. A third stone, a two-metre limestone slab on the north-eastern bank of the barrow itself, was noted in 1981 leaning at twenty-five degrees; the fieldworker at the time speculated, with some candour, that it may have been planted there as a scratching post for cattle rather than for any ancient purpose. Two hundred and fifty metres to the north, at the opposite end of the same hilltop, sit a flat-topped mound and what may be a platform-barrow, and Leny church below retains traces of a large curvilinear Early Christian monastic enclosure, known as a vallum, on its south-western side. The hilltop, in other words, has been drawing activity of one kind or another across an enormous span of time.