There is no visible trace of the souterrain today, which is itself a small measure of how completely the past can be buried, sometimes deliberately. A souterrain is an underground stone-built tunnel or chamber, typically associated with early medieval ringforts and used for storage, refuge, or both. This one, located in the western half of the surrounding ringfort, has been effectively rubble-filled and forgotten.

The last recorded sighting of any opening came from a source cited as Broker in 1937, who described a hole some 400 yards to the south-east of the ringfort that dropped down into an old passage leading back towards it. The account is brief but evocative: tons of stones had been thrown into the hole, presumably to prevent livestock from falling in or simply to dispose of a nuisance, but the capstone flag was still in place at the time of writing. That detail, the flag still there, carries a certain finality to it. Whatever the passage once contained, whatever movement it once allowed, it had by then been rendered inert, plugged and pressed down under decades of agricultural practicality.