“…The roads leading to Yungas were little more than loosely packed stone and dirt paths suited for mules, some of which harkened back to the Inca Empire (Sanabria, 1993). The SPY, through its taxes on coca, was able to finance the construction of an automotive road in 1935, the labor of which was prison labor from the Chaco War (Sanabria, 1993). However, the valley of the Yungas continued to remain sparsely populated until after the Agricultural Reform Law of 1953, which provided indigenous Bolivians the right to land ownership (Sanabria, 1993).…”