Recently extended from 111 miles to 136 miles to take in the source of the river Plynlimon Tge Wye Valley Walk is more popular than ever. The valley offers some of the most beautiful scenery in Wales along the course of one of Britain's cleanest rivers, alive with salmon and trout. The walk shows you some spectacular architecture including the magnificient ruins of Tintern Abbey. You'll also pass through dramatic gorges and woodland, rich in wildlife.