beautiful village of tonnerre with the natural karst spring of fosse dionne

beautiful french nature plant leaf summer branch trees leaves spring season green may april france area wonderful romantic charming corner hidden gem sunny walking outdoors travel tourism stone weekend village artistic cute cozy medieval garden rustic rural home house shutters windows doors hause roof road architecture wall flowers roses tonnerre natural foutain fosse dionne karst unique transparent blue water unusual mystique yonne river subterranean remarkable rainwater crystal clear round