The Bakerloo line extension is a proposed southern extension of the London Underground Bakerloo line in South London from its current terminus at Elephant & Castle. An extension to Camberwell was due to be built in the late 1940s, but the project was cancelled. In the 21st century the project has been revived in one version or another, but nothing has yet been agreed. Camberwell was originally proposed as a short-range destination for a southern extension of the Bakerloo line, but it is now widely viewed that the extension will continue below ground to Lewisham railway station, and then above ground via Catford Bridge railway station to take over the Hayes Line branch.