Art is all that is left behind in the cells of Lorton prison

Inside abandoned Lorton, once one of the country's most notorious prisons, pale green paint is peeling -- drifting from ceilings, chipping from concrete floors in the silence of a haunting past. The cells are empty now except for one thing prisoners left behind: their art. The work is crude -- sometimes vulgar, sometimes poetic -- archaeological renderings of a lost civilization, capturing what it must have felt like to be locked away here.