From the Redmires Reservoirs near Sheffield, Clare Balding walks up Stanage Edge, a gritstone escarpment in the Peak District. In honour of the pioneering environmentalist, Ethel Haythornthwaite, 95 hilltops have recently been classified as `Ethels". Clare and her companions delve into Ethel's fascinating life-story as they immerse themselves in the scenery that inspired her
