In Vestenanova, the "round lake" and the "Stanghellini waterfall" are located in the bed of the Alpone River and are about 200 meters from the Stanghellini hamlet.
The beauty of the area is determined by a waterfall formed by the stream and the underlying lake, but especially by the extraordinary columnar basalts consisting of “columns of enormous volume, mostly hexagonal, but often pentagonal, quadrilateral, or triangular”, “a mass of basalt columns that resemble the trunks of trees cut down in the woods of Cadore.”
According to scholars, this is a natural phenomenon of great natural and scientific interest: it is a magnificent example of “prismatic columnar fracturing according to planes perpendicular to the lower and upper surfaces of the lava flow and resembles the classic basalts of Fingal's Cave in the Hebrides and the Giant's Causeway in Ireland.”
