Outside Wales, other industries started to use narrow-gauge railways to move freight, notably ironstone, limestone, china clay, brick clay and metals. Many common carrier lines were built: most of the railways on the Isle of Man were narrow gauge – mostly gauge. A number of railways were built to connect standard gauge railways with smaller towns, including the Southwold Railway, the Wolverton and Stony Stratford Tramway and the famous Lynton and Barnstaple Railway in Devon. These lines allowed communities that did not merit a full railway service to connect to the mainline network at low cost.