. . "Mont Gerbier de Jonc is a mountain of volcanic (phonolitic) origin located in the Massif Central in France. It rises to an altitude of 1,551 m (5,089 ft), and its base contains three springs that are the source of the Loire, France's longest river. It is the second most-visited site in the d\u00E9partement of Ard\u00E8che, after the Ard\u00E8che Gorges.This particular Lava dome resembles the back of a mythical tarasque."@en . "Gerbier de Jonc"@en . . . . "1551.0"^^ . . .