Totley Moor is an open moorland hill to the west of the Sheffield suburb of Totley, in the Derbyshire Peak District. The summit is 395 metres (1,296 ft) above sea level. Totley Tunnel runs for 3.5 miles (5.6 km) under Totley Moor and Longshaw Estate, between Totley and Grindleford stations. It was built between 1888 and 1893 by Midland Railway for the route between Sheffield and Manchester through the Hope Valley. A large air ventilation shaft rises from a natural cavern, which the tunnel passes through, up to the surface on Totley Moor. The tunnel remains in use today for frequent trans-pennine passenger trains.