Pilaya Jungle

The Pilaya cuts through the eastern Andean foothills of southern Bolivia on its way toward the Pilcomayo. Forested slopes and deep valleys mark the transition from the highlands to the Chaco lowlands. Rivers descending through this country carry seasonal rains eastward, while the mountains divide one valley from the next. Guaraní communities inhabited parts of the eastern foothills, where Spanish colonial expansion encountered sustained resistance.