entering another mountainous region of Monseñor Nouel. The Yuna next passes north of Falconbridge Ltd., a major economic income for the Bonao area. The Yuna heads east as it cuts through several mountains in this region including the Flat Hill (Spanish: La Loma del Llano) where the Yujo River converges onto the Yuna. The river accompanies the Sánchez Ramírez Province line east of Flat Hill and enters the province upon arriving at Lake Hatillo (Spanish: Presa de Hatillo) in the municipality of Cotuí where it joins the Maimón River. Lake Hatillo runs north-northeast for and has a total area of from the Yuna–Maimón convergence to a hydroelectric dam located southwest of Cotuí. The reservoir, surrounded by rolling hills, is the largest artificial lake and is home to the largest dam in the Caribbean. The Hatillo dam in the Yuna River is an example of a dam with flood control purposes. The Yuna continues past the dam running northeast while decreasing in elevation and receiving first the Maguaca River and later the Chacuey River along the right bank. The Yuna bypasses the city of Cotuí to the north and enters a Sánchez Ramírez region filled with cocoa orchards. The Yuna receives its principal tributary, the Camú River, approximately northeast of Cotuí at the Duarte Province line at an elevation of above sea level. The Camú River has its source within the Cordillera Central and has a watershed that spans seven provinces: La Vega, Santiago, Monseñor Nouel, Hermanas Mirabal, Sánchez Ramírez, and Duarte. The Yuna turns east after receiving the Camú River along its left bank and now serves as the Sánchez Ramírez-Duarte Province line, heading into wetlands filled with rice and cocoa cultivation. The easternmost segment of the Yuna past the mouth of the Camú River has the most s-shaped curves of any segment in its course. The Yuna continues to decrease in elevation as it heads east reaching above sea level upon entering Duarte Province and the municipality of Eugenio Maria de Hostos where it meets two small tributaries along its left bank: the Nigua and Yaiba Rivers. The Yuna next heads into the municipality of Villa Riva running east-northeast while descending into elevations of above sea level. The Yuna passes north of Los Haitises National Park where it meets the Cevicos River along its right bank. The Yuna then traverses a region with several lagoons and wetlands and heads