Impasto Oil Painting of River Mountain Scene in Wales by British Artist Charles Wyatt Warren (1908-1993) Art measures 21 x 9 inches Frame measures 26 x 14 inches Charles Wyatt Warren (1908-1993) was a self-taught painter and an enthusiastic supporter of the arts in North Wales. He painted the breath taking scenery around his native Snowdonia in the impasto, palette knife sculpted style of the North Welsh school made famous by its master, the late Sir Kyffin Williams.