Motifs and images are derived from rocks and crags, strata and erosion, dry stone walls, lichen covered surfaces, pattern and texture on the landscape, remnants of history and prehistory, accidental and deliberate marks made by man, solidity, massiveness, great weight and scale, monumental serenity, the rhythm of moving water - flow, speed, splashing, noise and silence. More recent pieces have become more introspective and philosophical and contain a narrative derived from an increasing interest in the secrets held by the landscape. Thus an interest in Celtic Mythology, especially in the stories surrounding Sgathaic and Cu Chulainn, in the exploits of the Andartes on Crete, and in the Prehistoric Rock Art found in Northumberland influence the choice of imagery and the way it is controlled.