Offa's Dyke runs along the border between England and Wales. I walked from south to north, from Chepstow to Prestatyn, It took me 12 days. The Path was opened in 1971 by Sir John Hunt, leader of the 1952 Everest Expedition. For over a third of its 177 miles it closely follows the earthworks of Offa's Dyke. It falls into 5 stages, all different and equally interesting and challenging. It begins by following the course of the River Wye from its mouth...