In the 1930s, Catania remained a small fishing town with derelict and disused industries. The railway functioned until the 1930s when it was gradually disused and mostly dismantled. The university had been built above a tunnel on the disused Canterbury and Whitstable Railway. It was disused from 1932, but was not finally abandoned until 1964. Most of the disused structures on the island were demolished. Today, the only visible remnants of the mines are disused shafts and boreholes. Some sporting venues utilise disused industrial sites. Preston Docks, an industrial port are now disused for commercial purposes. By that time the east stairwell, near which they fell, was disused, being partly ruinous. Obsolete also refers to something that is already disused or discarded, or antiquated. Disused coal mines can also cause issues. This route remains intact, albeit disused. However, in the early 21st century the building became disused and faced dereliction. The chalk pit is disused and full of people's dumped rubbish. Kentish Town Road contains one of London's many disused Tube stations.