Distance: 10.3 miles of easy road walking, mostly through woodland followed by a gravel track above Howden and Derwent Reservoirs. Recommended Map: Ordnance Survey Outdoor Leisure Series Sheet1; The Peak District, Dark Peak Area Public Transport: Hulleys and TM Travel 273, 274 & 275 Two Hour Service from Bakewell and Sheffield via Castleton and Bamford. Car Parking: Fairholmes Visitor Centre.  N.B. Please note that the valley road is open to walkers, cyclists and horse riders, but it is closed to cars and motor cycles on Sundays and Bank Holidays from Easter to end October.  Bus service from Bakewell, Sheffield via Castleton and Bamford (railway station). Refreshments: Fairholmes Visitor Centre. Although man-made, the flooded section of the Derwent Valley can vie with most of the English Lake District.  Three reservoirs built over fifty years during the early to mid-twentieth century, have mellowed into an attractive amenity for all users. Trees planted at the same time as the reservoirs were built, have now matured and generally being of mixed varieties, make a perfect foil to a remote scene composed of water backed by wild moorland. Starting with Howden at the upper section of the valley, each dam and ancillary features such as culverts and filter beds, were built individually, one after the other gradually moving downstream.  In order to accommodate the over a thousand-strong workforce, a village of corrugated iron huts was erected, catering for every need from groceries, to a doctor’s surgery and a barber’s shop.  The village was known officially as Birchinlee, but soon found its way into the vernacular as ‘Tin Town’. The walk passes the site of Tin Town.  Nothing remains of the actual buildings, but overgrown terraced ledges still mark the street pattern.  A roadside plaque tells the story of a village that disappeared once its purpose...