If you want to know what’s going on beneath the streets of London, Dr Maxwell Roberts is your man. He is the author of Underground Maps Unravelled, a book about the history, science and design aesthetics of subterranean cartography, with a particular focus on the London Underground map. Apart from the additions at its edges, the official London tube map hasn’t changed much since it was originally designed by Harry Beck in 1931, but Max Roberts has refashioned it several times in recent years. One of his maps reflected the true distances between the stations and another was in the style of Charles Rennie Mackintosh. His latest reworking is this groovy circular version. Click the image to see it in its full glory. It’s a beautiful thing, baby.