Watercolour on paper, View of the Cascade at Terni by Louis Ducros (Yverdon, Switzerland 1748 ¿ Lausanne 1810). Painted for the 6th Earl of Stamford in 1788. The Falls of Velino, where it empties itself into the Nera near Terni, known as the Cascate delle Marmore, are about 650 feet high. Colt Hoare, in describing the similar drawing at Stourhead, said that it showed the waterfall from the point where it should be, but seldom is seen, i.e. from the oposite bank of the river. Cascata delle Marmore.The falls have been created almost entirely by man.Curius Dentatus, conqueror of the Sabines (271 B.C.) was the first to cut a channel by which the River Vellinus (Velino) was thrown over a precipice into the River Nar, to prevent flooding in the plain of Reate (Reti).Another channel was cut in 1400 and a third, draining the plain of Rieti without flooding Terni) in 1785.Today the falls have been diverted entirely for industrial purposes, but are released to their original channels on certain holidays.