Faux-la-Montagne owes its name to its high altitude (more than 700 m above sea level) on the western edge of the Millevaches plateau. Although the region was not always wooded, many beech plantations (or fayards) must have existed in the Middle Ages on the outskirts of the village. Indeed "Faux", from the Latin fagus, means beech in Old French; In the 15th century, the village was called Faguo (an Occitan variation of the Latin fagus). Today, around Lake Faux, beech and oak mingle with coniferous trees, occupying what was still heathland grazed by sheep in the 19th century.