London: Mind the Gap
The London Underground is a rapid transit system serving a large part of Greater London and neighbouring areas. Despite the name, about 55% of the network is above ground. It is usually referred to officially as ‘the Underground’ and colloquially as the Tube.
The nickname “the Tube” comes from the circular tube-like tunnels through which the trains travel and within which the station platforms are built.
“Please Mind The Gap between the train and the platform. Mind the Gap!”
©JKScatena Photography 