Weatherman Walking S25 E09 The Best Of 9. Highlights from Mid-Wales

Derek searches for his finest hikes after seventeen years of walking around Wales. The first walk he re-discovers is slap bang in the middle of Wales, in the foothills of the Cambrian mountains where he walks around the Hafod estate - a two-hundred-year-old tourist playground of spectacular woods, waterfalls and riverside trails. Next Derek recalls a stroll on the Welsh border in Presteigne, with a young man who walked the entire 1,100-mile perimeter of Wales to raise awareness and funds for Alzheimer's. Finally, Derek travels to the Elan Valley in Powys for a stunning seven-mile circular walk, punctuated by incredible feats of engineering - dams. He learns how the valley was flooded to supply water to Birmingham, he tries out downhill mountain biking and learns how the famous Dam-busters’ bouncing bombs - key to second world war effort, were tested here.