Wood On The Downs After Paul Nash by Martin Malone We have been here before. Uffington, Hackpen, Grim’s Ditch, Ogbourne St.George, Wayland’s Smithy, Sparshott Firs, Bishopstone and Barbury; all the trodden way from Overton to Beacon Hill. Each place its genius loci, a favourite colour: Ash-Blue, Ochre, Payne’s Grey, Terra-Verte, Lamp Black, Sienna. But today you ditch your winter…