The mountain shown on the Toblerone chocolate package is the Matterhorn.
Toblerone is a Swiss chocolate bar created in Bern by Theodor Tobler and Emil Baumann in 1908. Its distinctive triangular pieces are commonly linked with the shape of the Matterhorn, the famous pyramid-shaped peak in the Alps on the border between Switzerland and Italy. The mountain has appeared prominently in Toblerone branding for decades.
The bar’s name combines Tobler’s surname with “torrone,” an Italian nougat confection. Toblerone contains milk chocolate, honey, almond nougat, and, in its traditional formulation, other characteristic ingredients associated with its distinctive flavor.
The Matterhorn is not Switzerland’s highest mountain; that is Monte Rosa’s Dufourspitze. The Matterhorn was nevertheless an especially effective symbol for Toblerone because its sharp silhouette echoes the bar’s repeated triangular shape. Packaging designs have changed over time, but the Matterhorn remains strongly associated with the brand.