Coca leaves are still used in indigenous medicine and religious ceremonies. Andean people have chewed coca for thousands of years to stave off hunger and as a remedy for ailments from altitude ...

Figure 1: Map of northern Chile, showing locations of study fields from which mummy bones and blood samples of contemporary Andean people were collected (boxed area, right, enlarged at left).

Along the way, passengers can also explore local markets, learn about the traditions of the Andean people, and even visit a ...