This is the site of a possible gun battery, thought to have been established at a place recorded as "the Sprague" in 1713.  The name is now unknown but it is thought likely to correspond with the Burroo, which is shown as Spaig Burrow on Wilson's map of 1771. The structure known as "Bushell's Grave" on a rocky islet off the tip of the peninsula (SC 16006451) may have constituted the store and mounting for this gun.