The feature runs roughly north-north-east to south-south-west for about 68 metres, with a maximum width of around 8 metres. When someone went out to look at it in person in 1984, they found not a monument or earthwork of any antiquity, but a disused gravel pit, its outline preserved as a hollow in the landscape. It is, in other words, a working scar left by the extraction of gravel, most likely sometime in the nineteenth or early twentieth century, and now quiet enough to be mistaken at a glance for something older.