Marching Powder: A True Story of Friendship, Cocaine, and South America's Strangest Jail : Inspired by the description of San Pedro Prison in La Paz, Bolivia, in the "Lonely Planet Guidebook - and in particular by the English-speaking tours it advertised - Rusty Young decided to visit the prison. The tour was given by inmate Thomas McFadden, a British subject arrested for drug smuggling. They struck up a friendship, and Young ended up spending four months in San Pedro, listening to McFadden and learning about one of the strangest places on earth. San Pedro is a city within a city: Inmates buy and sell their cells. Advertisements cover the walls. Wealthy drug lords live in opulence and continue to do business. The poor scrape by however they can. As Young discovered through McFadden, San Pedro functions through a truly unique form of capitalism, and features a fascinating cast of captive characters. Marching Powder is a first-hand account of life in one of the world's more compelling backpacking destinations.