Yorkshire-born author A Walker's writing centres around the earlier works of Alfred Wainwright, particularly his Pennine Journey, which he had undertaken in 1938. Walker retraced the route and found it became the inspiration for Back to the Wall, a personal reflection that uses the walk as a microcosm of life's journey. Walker's interpretation of his 1998 trek takes the form of a rambling account that compares and contrasts with Wainwright's original book using his own views and opinions as the basis of a thought-provoking and amusing yarn. Walker also wrote his historically based guide to the walk published as In Wainwright's Footsteps: The Pennine Journey.