There is a group of extensively carved rock outcrops at Achnabreck, near Kilmartin.
Cup-and-ring marked rocks by their nature are difficult to date. However, it is clear that there were at least two phases in the decoration of this rock surface as some carvings overlay earlier markings.
At Achnabreck is the unusual feature of a double spiral, as shown in the photographs.
1/15 One of the main carved outcrops with the double spiral in the lower-left corner.
2/15 The horned spiral.
3/15 One of the main carved outcrops with the double spiral in the lower-left corner.
4/15 Low angled view of one of the main carved outcrops.
5/15 The horned spiral.
6/15 The horned spiral.
7/15 A heavily decorated area.
8/15 Detail of one of the cup and ring carvings.
9/15 Detail of several of the cup and ring carvings with radialgrooves through the rings.
10/15 Detail of several of the cup and ring carvings with radialgrooves through the rings.
11/15 Detail of the double spiral (left) and a 2-ring cup (right).
12/15 Detail of several of the cup and ring carvings with radialgrooves through the rings.
13/15 Detail of some of the carvings.
14/15 Detail of some of the carvings.
15/15 Detail of one of the larger carvings. Although badly eroded theouter rings are about 1 metre in diameter.