![](http://upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Clapham_Common_Tube_Station_Platforms_-_Oct_2007.jpg/400px-Clapham_Common_Tube_Station_Platforms_-_Oct_2007.jpg)
Photo credit: David Iliff
The platform at Clapham Common, a station on London Underground's Northern line. With tracks on either side serving trains moving in opposite directions, this is an example of an island platform.
The platform at Clapham Common, a station on London Underground's Northern line. With tracks on either side serving trains moving in opposite directions, this is an example of an island platform.