Tensions are flaring after Brazil’s approval of the Belo Monte dam project last month to divert the flow of the Xingu River. The dam, which will be the world’s third larges, will flood 500 square miles of rainforest, lead to the removal of at least 12,000 people in the region, and upturn the lives of 45,000 indigenous people who depend on the Xingu. After fighting the construction of the dam for nearly thirty years, indigenous groups are beginning to talk of a last stand.