The Ya̧nomamö are a large population of native people in South America. They resie in the Amazon rainforest, among the hills that line the border between Brazil and Venezuela. Due to the remoteness of their residence, they had remained largely uncontacted by the outside world until the beginning of the last century. This has allowed them to retain several aspects of their culture that factors such as population explosion and growth in material wealth have eradicated from the rest of the world. As a result, the Yanomamö have come to be one the best studied groups by modern Science.