The largest freshwater lake in Central America, Lake Nicaragua is drained by the San Juan River, which flows east-southeast through a rift valley and empties into the Caribbean Sea. Also visible in this view is Ometepe Island, formed by two volcanoes, is located along the west side of Lake Nicaragua. Conception Volcano, an active volcano, makes up the larger, northwest part of the island, while Maderas Volcano on the southeast side of the island is dormant. Their respective summit elevations are 5283 feet (1610 meters) and 4413 feet (1345 meters) above sea level.