The commonest form of rock carving in the British Isles, consisting of a cup-like depression surrounded by one or more concentric grooves. Cup-and-ring marks are found on standing stones, singular or in stone circles, and on the slabs of burial cists, as well as on natural rock surfaces. In its classic form most cup-and-ring art belongs in the Bronze Age, but the motif occurs on passage graves, for example in the Clava tombs and on the capstones at Newgrange, where it may show links with similar rock carvings in northwest Spain. They are also found in Ireland and Scotland and can be dated to the Neolithic period of the 4th-3rd millennium BC.