The Fall of Foyers (Scottish Gaelic: Eas na Smùide, meaning the smoking falls) is a waterfall on the River Foyers, which feeds Loch Ness, in Highland, Scotland, United Kingdom. The waterfall has “a fine cascade”, having a fall of 165 feet. It is located on the lower portion of the River Foyers at grid reference. The river enters Loch Ness on the East side, North-East of Fort Augustus. This waterfall influenced Robert Addams to write a paper in 1834 about the motion aftereffect. The flow over the falls has been much reduced since 1895 when North British Aluminium Company built an aluminium smelting plant on the shore of Loch Ness which was powered by electricity generated by the river. Artist Mary Rose Hill Burton, who was active in the unsuccessful resistance against the smelting plant, made many drawings and paintings of the falls before the plant was built, to capture the landscape before it was lost. The plant shut in 1967 and the site is now part of a 300 MegaWatt pumped-storage hydroelectricity system at Loch Mhòr.