The Allendale smelt mill flues and Dryburn Moor

Five and a half miles and 250 metres of climbing in about three hours, up the line of the two-and-a-half-mile flues built in 1805 to carry lead smoke off the valley floor, to the pair of chimneys on Dryburn Moor and back on Isaac’s Tea Trail. Start in Allendale Town market place, where parking is free and rarely a problem; the climb begins at Allen Mill on the river below the village. Open moor gives long off-lead running and there is water in every burn, but the moor is grazed and holds ground-nesting curlew and lapwing from March to July, when the National Park asks for dogs on leads, and old flue workings leave open stonework to avoid.