
This river has marked its history. In Roman times, the Colostre was an important axis of development. Later, the inhabitants of the valley domesticated it and used it for agricultural purposes. A network of canals ran through the valley. The water intakes are still visible. They cultivated tulip, beans or mulberry trees. Shepherds let their sheep to graze on the banks. Today, the Colostre is identified as a major biological reservoir to restore and preserve.