During the "Rubber Boom" of 1895-1917, the Matsigenka and Wachipaeri were enemies. The populations of both groups were greatly reduced by violence, slave trading, and diseases introduced by foreigners. After the Amazon rubber trade collapsed, the two groups made peace. When a measles epidemic in the 1950s reduced the Wachipaeri population by more than half, the survivors began to intermarry with the Matsigenka. Most of the surviving Wachipaeri (approx. 80) live in Huacaria. The Matsigenka population is much larger and live in numerous settlements throughout the region. In the photo, a Matsigenka/Wachipaeri family is shown outside their house.