Matterhorn

The Matterhorn sits on the border between Switzerland and Italy, straddling the main Alpine watershed. This near-symmetric pyramidal peak, part of the Pennine Alps' Monte Rosa area, rises to 4,478 metres (14,692 feet) above sea level, placing it among the highest summits in the Alps and Europe. Often called the "Mountain of Mountains" (German: *Berg der Berge*), it has become a lasting symbol of both Switzerland and the entire Alpine range, frequently described as the world's most beautiful mountain and claimed to be its most photographed.

The mountain has four faces, each roughly aligned with a cardinal direction. The north, east, and west faces lie on the Swiss side of the border, while the south face is in Italy. These steep faces, rising above surrounding glaciers, are separated by the Hörnli, Furggen, Zmutt, and Leone (Lion) ridges. To the northeast, the Matterhorn overlooks the Swiss town of Zermatt in the canton of Valais; to the south lies the Italian town of Breuil-Cervinia in the Aosta Valley. Just east of the peak, Theodul Pass has served as a trade route between the two valleys since Roman times.

Horace-Bénédict de Saussure studied the Matterhorn in the late 18th century, followed by other noted naturalists and artists like John Ruskin in the 19th. It remained unclimbed long after most other great Alpine peaks had been conquered, sparking an international race for the summit. The first ascent was made in 1865 from Zermatt by a party led by Edward Whymper, but during the descent, a sudden fall killed four of the seven climbers. This disaster, later depicted in several films, marked the end of the golden age of alpinism. The north face, one of the three biggest north faces in the Alps (known as "The Trilogy"), was not climbed until 1931. The west face, the highest of the four, was fully ascended only in 1962. Over 500 alpinists are estimated to have died on the Matterhorn, making it one of the world's deadliest peaks.

Geologically, the Matterhorn is mainly composed of gneisses from the Dent Blanche nappe—originally fragments of the African plate before the Alpine orogeny—lying over ophiolites and sedimentary rocks of the Penninic nappes. Its current shape results from cirque erosion by multiple glaciers diverging from the peak, such as the Matterhorn Glacier at the base of the north face. Since railways reached the area in the late 19th century, the mountain has drawn increasing numbers of visitors and climbers. Each year, many mountaineers attempt the most popular route, the northeast Hörnli ridge, starting from the Hörnli Hut. Many trekkers also complete a 10-day circuit around the mountain. The Matterhorn has been part of the Swiss Federal Inventory of Natural Monuments since 1983.

The name Matterhorn comes from the German words *Matte* ("meadow") and *Horn* ("horn"), often translated as "the peak of the meadows." On the Schalbetter map printed by Sebastian Münster in 1545, the valley is labelled Mattertal, while the mountain appears as both the Latin *Mons Silvius* and the German *Augstalberg*, matching the Aosta Valley (German *Augstal*). Johannes Stumpf's 1548 map gives only *Mons Silvius*. The French name Cervin, from which the Italian Cervino derives, comes from the Latin *Mons Silvanus* (or *Mons Sylvanus*), where *silva* means "forest"; this was corrupted to Selvin and then Servin. The change of the first letter from "s" to "c" is attributed to Horace Bénédict de Saussure, who thought the word related to "deer" (French: *cerf*, Italian: *cervo*). Josias Simler hypothesized in *De Alpibus Commentarius* (1574) that *Mons Silvius* derived from a Roman leader, a theory later readopted by T. G. Farinetti, who suggested this Silvius might have been Servius Galba, charged by Caesar with opening Alpine passes. The new name Servin, or Cervin, eventually replaced the old, though the timing is unknown. The Valdôtains call it *Gran Bècca* ("big mountain"), and local Walliser German speakers call it *Horu*. The German name "Matterhorn" first appears in 1682. Because of its recognisable shape, many similar mountains worldwide have been named or nicknamed "the Matterhorn of" their respective regions.

The Matterhorn has two distinct summits at either end of a 100-metre-long exposed rocky crest that forms the Italian/Swiss border. In August 1792, Horace Bénédict de Saussure made the first measurement of its height, using a sextant and a 50-foot-long chain spread on the Theodul glacier, calculating it as 4,501.7 metres (14,769 feet). In 1868, Italian engineer Felice Giordano measured a height of 4,505 metres (14,780 feet) with a mercury barometer taken to the summit.