It is the gravel that typifies this area in which the waters of the Cellina and Meduna rivers pursue each other to play hide and seek. Rare species of pre-historic plants, fruit of some seeds left on the ground by the retreat of the glaciers or by the passage of invading populations, give nature a characteristic vegetation and cutting-edge agriculture. Traces of its ancient history are revived in the antiquarium of Tesis, where archaeological remains have been gathered together.