A small fragment from a wheel-headed cross, which was found in 1874 during restoration of the barracks or garrison hall. It was for a time displayed in the castle museum located in the guardhouse. Part of the head and part of the left arm of the cross survive, together with a short arc of the encircling ring. The face of the cross is decorated with a loose interlace: the upper limb shows a ring trapping looped bands. The ring appears to have been undecorated.