The "Sun Stone" found at Govan Old Parish Church.
The stone is a cross slab, with a carved cross on one side above a depiction of an armed man mounted on an animal (presumably a horse). The reverse of the cross slab contains a version of the snake-and-boss motif found in early Christian sculpture, consisting of a depiction of snakes radiating from a boss - an image which some interpreted as a sun and its rays, hence the cross slab's popular title.
Reference: Glasgow University Library, Sp Coll Mu25 - x.6
Glasgow University Library, Special Collections
cross slabs, Govan Old Parish Church, horsemen, sculptires, snake-and-boss motifs, snakes, Sun Stone, warriors