Piz Bernina is one of the few isolated Alpine four-thousanders and the most topographically isolated mountain of Switzerland. It is the culminating point of a group of summits slightly lower than 4,000 meters mostly lying on the main watershed between Switzerland and Italy. The only other summit higher than is La Spedla, a minor prominence south of the mountain, which is also the highest point on the Italian side of the massif. The summit itself is located on a perpendicular chain starting at La Spedla on the border and finishing at Piz Chalchagn, composed also of Piz Morteratsch and Piz Boval. Piz Bernina separates two glacial valleys, the Tschierva Glacier on the west and the Morteratsch Glacier on the east. The waters flowing on both side of the mountain end up in the Inn River running northeast through Engadin. South of Piz Bernina the watershed separates the drainage basins of the Danube and the Po River. The summit of Piz Bernina is the culminating point of the Danube drainage basin. Politically, it is split between the municipalities of Samedan and Pontresina.
Geology
The rocks composing Piz Bernina are mostly diorites and gabbros. The massif in general is also composed of granites, notable on Piz Corvatsch and Piz Palü. Most of the range belongs to the Austroalpine nappes, a tectonic unit whose rocks come from the Apulian plate, a small continent which broke away from Africa before the Alpine orogeny. The Austroalpine nappes are common throughout all of the Eastern Alps.
Climbing history
The first ascent was made via the east ridge in 1850 by the 28-year-old topographer Johann Wilhelm Coaz and his assistants, the brothers Jon and Lorenz Ragut Tscharner. On 13 September 1850, shortly after 6 a.m., they left the Bernina Inn with their measuring instruments. They traversed the Labyrinth and headed to the Fuorcla Crast'Agüzza, a col between the Crast' Agüzza and Piz Bernina. They reached the summit at around 6 p.m. Johan Coaz wrote in his diary: In 1866, the south ridge running from La Spedla was climbed by Francis Fox Tuckett and F. A. Y. Brown with guides Christian Almer and F. Andermatten. They started at midnight from the Alpe Foppa on the Italian side, and reached the summit at 11 a.m., descending to Pontresina only a few hours later. The first attempt to climb the northern ridge, the Biancograt, was made on 12 August 1876 by Henri Cordier and Thomas Middlemore with guides Johann Jaun and Kaspar Maurer. They successfully reached the top of the ridge, Piz Alv, but when they saw the chasm lying between them and the summit of Piz Bernina, they considered it to be beyond their powers and returned down the Biancograt. Cordier later declared the gap to be "absolutely impossible". Exactly two years later, Paul Güssfeldt, accompanied by the guides H. Grass and J. Gross, reached the summit via the Biancograt and accomplished the first complete ascent on this route. The first winter ascent was made on 15 March 1929 by C. Colmus with guides C. and U. Grass. To win a bet worth 200 CHF, Hermann Buhl reached the summit of Piz Bernina from the Boval hut in 6 hours; he then descended the north ridge in only 15 minutes, establishing a record.
Tourism
Piz Bernina is the highest summit of the Engadin region and lies close to the resorts of St. Moritz and Pontresina. The mountain can be seen from different viewpoints with the use of ski-lifts from Diavolezza, Piz Corvatsch or Piz Nair. The Bernina railway connects St. Moritz with the southern Val Poschiavo through the Bernina Pass.
Climbing routes and huts
The normal route starts from the Rifugio Marco e Rosa, located at above the Fuorcla Crast'Agüzza, and follows the route taken by the first ascentionists. The north ridge, called the Biancograt or Crast Alva, is the most well-known and attractive route to the summit, and is much more difficult than the normal route. The route starts from the Tschierva Hut in Val Roseg, accessible from Pontresina. The Biancograt itself starts at the Fuorcla Prievlusa and leads to Piz Bianco. To reach the summit, the Bernina gap – which repulsed Cordier, Middlemore, Jaun and Maurer in 1876 – has to be traversed. Other huts in the area
