There's an old and apocryphal London saying that you're never more than six feet away from a rat. This map from Stephen Walter shows how you're never more than a furlong from a subterranean oddity ...

The map follows on from previous cartographic masterpieces by the same artist, including his intense, personal mapping of Greater London in The Island (2006-2008), and its subterranean sequel (2012).

The underworld of London carries many secrets. At least, it used to. Artist Stephen Walter has found and documented the city's underground complexion in a hand-drawn map of subterranean London ...

The first exhibition of contemporary art at Fenton House is of maps by Stephen Walter. Inspired by the unfolding drama of city life, Walter's maps trace 'a city's ability to constantly reinvent ...