Corodehuachi
Corodéhuachi lies in the Turicachi valley of northern Sonora, between the mountains of Los Ajos and Fronteras. Ópata communities inhabited this valley before the arrival of Spanish missionaries. In 1645 the Jesuits Marcos del Río and Egidio Montefrío established the mission of Santa Rosa de Corodéhuachi as part of their work among the Ópata. The settlement stood on the expanding northern frontier of New Spain, where river valleys offered routes through the mountains.