The third book in the series Trains Are...Mint sees the artist walking from Berlin's Alexanderplatz to Frankfurt on the Polish border, keeping as close to the train line as he can without trespassing. From memory the journey is then documented with each A3 page being exquisitely rendered in ink and watercolour, recording the mundane and ordinary, the beautiful and extraordinary. For this project, Oliver then gave one page each to his friends, artists and non-artists, musicians and pro-drinkers alike, to alter as they please - a total of 52 people collaborated on the book.