Two French rivers disappear underground in large cracks and sinkholes: The Doubs River (Franche-Comté) and the Risle (Normandy)
Two French rivers disappear underground in large cracks and sinkholes: The Doubs River (Franche-Comté) and the Risle (Normandy) By Strange Sounds The Doubs river flows normally in Franche-Comté, Fr…
