The Cordillera Central mountain range is located within El Cibao, containing the highest peak in all of the Caribbean, Pico Duarte. Two of the largest rivers of the country are also located inside this region: the Yaque del Norte, the largest river of the Dominican Republic, and the Yuna river. Both of these rivers contain several chains of dams used to provide the region with water for irrigation (since agriculture is the main activity of the area) and hydroelectric energy. Rice, coffee and cacao are the most important crops grown in the area.