Watch Underground : USA (2015) : Full Movie Online Free In 2009, Geoff Marshall drove to all 48 Mainland States in America, visiting one place in each state that shared its name with a station on the Tube Map. The 12-week long road-trip also took in several classic 'must-see' tourist spots along the way. Thousands of photos were taken, hours of video was recorded, and this is a one hour documentary of that journey.