The Potteries, Shrewsbury and North Wales Railway, (known informally as the 'Potts'), was a railway built between Shrewsbury, England, and quarry locations at Nantmawr and Criggion in Wales. It was initially opened in 1866; despite the extensive title it never reached further than those extremities. It had cost about £1.5 million to construct, but its financial performance was extremely poor, and economies resulted in near-suspension of maintenance, leading to dangerous conditions. The line rapidly became very run down as a result of low revenues and poor maintenance, and was closed at the instigation of the Board of Trade for safety reasons in June 1880. It lay derelict for 30 years but was revived when the Shropshire and Montgomeryshire Railway re-opened it as a light railway in 1911.