 The Lacus Lausonius is supposed to be Lausanne, on the Lake of Geneva; or rather a place or district, as D'Anville calls it, named "Vidi".The distance from Geneva to Nyon, along the lake, is about 15 English miles (24 km); and from Nyon to Lausanne, about 22 or 23 miles (35 to 37 km).The distance from Geneva to Nyon is quite close, allowing for the variability of a coastal road; but the 20 Roman miles from Equestris to the Lacus Lausonius is not enough.