The Fyète well

Well-protected by a railing, this smooth-sided abyss is comprised of one single 33-metre-deep well. Cut into the vertical rocks, this well is the result of the collapse or dissolution of limestone layers by the flow of water. Several terms are used to refer to these spectacular Karstic phenomena: abyss, chasm, well... Notice the black spleenwort fern plants that grow in the crevices of the walls.