On the southern edge of Rouken Glen park, just a few metres from the railway line, is a small outcrop of limestone less than 2 metres square. There are at least three cup marks, one of which has the faint remains of at least one ring.
1/18 There is most of a faint ring around the cup mark in the middle of the picture. Another cup mark is at the upper left edge. Natural wrinkles in the rock are clearly visible on the right.
6/18 50 pence piece for scale.