It is barely thirty centimetres at its highest point, egg-shaped in plan, and at its south-western end a few small stones and one larger slab push up through the turf. Unassuming to the point of near-invisibility, it is the kind of feature a walker could step over without a second thought.

The mound sits within the wider complex of ecclesiastical remains at Kill, roughly 9.6 metres to the south-south-east of the holy well there. Its position just outside the line of the enclosure is itself suggestive; penitential activity in early Irish Christianity often took place at the threshold of sacred space rather than within it. Penitential stations were focal points for prescribed acts of prayer, fasting, or physical hardship, sometimes involving circuits walked barefoot or on the knees, and they are commonly found in association with early church sites and holy wells. The mound's morphology initially invites comparison with the island's fulachtaí fia, a fulacht fiadh being a type of Bronze Age cooking or heating site typically formed from a mound of burnt and cracked stone, but the shape and context here do not match that pattern well enough to make the identification convincing. The more plausible reading, given its location beside the well and within the ecclesiastical landscape of Kill, is that this is a penitential monument of some kind, though its precise original form and date remain uncertain. The description and interpretation were published in the New Survey of Clare Island, Volume 5: Archaeology, edited by Paul Gosling, Conleth Manning, and John Waddell, and issued by the Royal Irish Academy in 2007.