The Cauto River is the longest river in Cuba, stretching approximately 230 kilometers. It flows through the eastern part of the island, starting in the Sierra Maestra mountains and emptying into the Gulf of Guacanayabo. The river is an important waterway for local communities and supports various ecosystems along its banks. The Cauto River is known for its diverse wildlife, including numerous fish species and birds. It also plays a significant role in agriculture, providing irrigation for nearby farms. The river's basin is rich in natural resources, making it vital for both the environment and the economy of the region.