In The Old Ways, Robert Macfarlane continues to write about his experience of walking and observing as he passes through landscapes - some dramatic and some more mundane.
For Silt, one of the most striking chapters of his brilliant recent book, bestselling travel writer Robert Macfarlane walked the Broomway, the notorious 'deadliest path in Britain'.
He was accompanied on this journey along along the Essex offshore path (which has claimed the lives of more than sixty people over the centuries) by his friend and accomplished photographer David Quentin.
Penguin Books are publishing a special e-book edition of Silt which will feature all of David's photographs from the journey, all taken on 35mm black and white film using a Leica rangefinder.
Until April 13th 2013 the photographs are exhibited in London at 4 Windmill Street, accompanied by a specially commissioned sound piece by musicians Jimmy Cripps and Rico Borza, and sound designer Jesse T. Rybolt. Find out more