Description of Kerbstone 15
The dominant motif here is a semi-circle of twenty (one partial) picked lines radiating out from a small cupmark/dot. The radial lines widen outwards and all, except for two towards the left, terminate in a small rectangle. There are three extra rectangles towards the right. A larger square/rectangular motif is picked beyond each of the small rectangles, followed by another small rectangle. A second small cupmark is picked above the first. This is enclosed within a large oval motif, which is picked all over and is partially enclosed in an oval outer line which is doubled at the right.
At the upper-left of the oval there is a row of U-motifs, or possibly a small serpentiform, and a dot-and-circle. Beyond these, at the left of the stone, a row of circles curves outside the ends of the radial lines and two curved lines enclose the circles, to the left. To the right of the main face there is a large anti-clockwise spiral of seven turns. A number of motifs are arranged around the right side of the spiral. There are three small circles and an oval above it, and a series of single and double U-motifs to its right and below it. Further right is a small spiral with a series of zigzags above it, and a small, irregular circle above to the right. Below the spiral there are eight circles, one with a central dot.
