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Zugspitze

Highest peak of the Wetterstein Mountains (Eastern Alps)

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View at the mountain Zugspitze from the Austrian village Ehrwald
Octagon · CC BY 3.0

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Through Mountain, Germany and Plateau

The Zugspitze was first climbed on 27 August 1820 by Josef Naus; his survey assistant, Maier, and mountain guide, Johann Georg Tauschl. Today there are three normal routes to the summit: one from the Höllental valley to the northeast; another out of the Reintal valley to the southeast; and the third from the west over the Austrian Cirque (Österreichische Schneekar). One of the best known ridge routes in the Eastern Alps runs along the knife-edged Jubilee Ridge (Jubiläumsgrat) to the summit, linking the Zugspitze, the Hochblassen and the Alpspitze. For mountaineers there is plenty of nearby accommodation. On the western summit of the Zugspitze itself is the Münchner Haus and on the western slopes is the Wiener-Neustädter Hut.

Three cable cars run to the top of the Zugspitze. The first, the Tyrolean Zugspitze Cable Car, was built in 1926 by the German company Adolf Bleichert & Co and terminated on an arête below the summit at 2,805 m.a.s.l, the so-called Kammstation, before the terminus was moved to the actual summit at 2,951 m.a.s.l. in 1991. A rack railway, the Bavarian Zugspitze Railway, runs inside the northern flank of the mountain and ends on the Zugspitzplatt, from where a second cable car runs a short way down to the Schneefernerhaus, formerly a hotel, but since 1999 an environmental research station; a weather station opened there in 1900. The rack railway and the Eibsee Cable Car, the third cableway, transport an average of 500,000 people to the summit each year. In winter, nine ski lifts cover the ski area on the Zugspitzplatt.

Geography

The Zugspitze belongs to the Wetterstein range of the Northern Limestone Alps. The Austria–Germany border goes right over the mountain. There used to be a border checkpoint at the summit but, since Germany and Austria are now both part of the Schengen zone, the border crossing is no longer staffed.

The exact height of the Zugspitze was a matter of debate for quite a while. Given figures ranged from 2,690–2,970 metres (8,830–9,740 ft), but it is now generally accepted that the peak is 2,962 m (9,718 ft) above sea level as a result of a survey carried out by the Bavarian State Survey Office. The lounge at the new café is named "2962" for this reason.

Location

At 2,962 metres (9,718 ft) (eastern peak) the Zugspitze is the highest mountain of the Zugspitze massif. This height is referenced to the Amsterdam Gauge and is given by the Bavarian State Office for Survey and Geoinformation. The same height is recorded against the Trieste Gauge used in Austria, which is 27 cm lower. Originally the Zugspitze had three peaks: the east, middle and west summits (Ost-, Mittel- and Westgipfel). The only one that has remained in its original form is the east summit, which is also the only one that lies entirely on German territory. The middle summit fell victim to one of the cable car summit stations in 1930. In 1938, the west summit was blown up to create a building site for a planned flight control room for the Wehrmacht. This was never built; however. Originally the height of the west summit was given as 2,964 m (9,724 ft).

The mountain rises eleven kilometres southwest of Garmisch-Partenkirchen and just under six kilometres east of Ehrwald. The border between Germany and Austria runs over the west summit; thus the Zugspitze massif belongs to the German state of Bavaria and the Austrian state of Tyrol. The municipalities responsible for it are Grainau and Ehrwald. To the west the Zugspitze massif drops into the valley of the River Loisach, which flows around the massif towards the northeast in a curve whilst, in the east, the streams of Hammersbach and Partnach have their source. To the south the Gaistal valley and its river, the Leutascher Ache, separate the Wetterstein Mountains from the Mieming Chain. To the north at the foot of the Zugspitze is the lake of Eibsee. The next highest mountain in the area is the Acherkogel (3,008 m or 9,869 ft) in the Stubai Alps, which gives the Zugspitze a topographic isolation value of 24.6 kilometres. The reference point for the prominence is the Parseierspitze (3,036 m or 9,961 ft). In order to climb it from the Zugspitze, a descent to the Fern Pass (1,216 m or 3,990 ft) is required, so that the prominence is 1,746 m (5,728 ft).

Zugspitze Massif

The massif of the Zugspitze has several other peaks. To the south the Zugspitzplatt is surrounded in an arc by the Zugspitzeck (2,820 m or 9,250 ft) and Schneefernerkopf (2,874 m or 9,429 ft), the Wetterspitzen (2,747 m or 9,012 ft), the Wetterwandeck (2,698 m or 8,852 ft), the Plattspitzen (2,679 m or 8,789 ft) and the Gatterlköpfen (2,490 m or 8,170 ft). The massif ends in the Gatterl (2,024 m or 6,640 ft), a wind gap between it and the Hochwanner. Running eastwards away from the Zugspitze is the famous Jubilee Ridge or Jubiläumsgrat over the Höllentalspitzen towards the Alpspitze and Hochblassen. The short crest of the Riffelwandkamm runs northeast over the summits of the Riffelwandspitzen (2,626 m or 8,615 ft) and the Riffelköpfe (2,459 m or 8,068 ft), to the Riffel wind gap (Riffelscharte, 2,161 m or 7,090 ft). From here the ridge of the Waxensteinkamm stretches away over the Riffelspitzen to the Waxenstein.

Zugspitzplatt

The Platt or Zugspitzplatt is a plateau below the summit of the Zugspitze to the south and southeast which lies at a height of between 2,000 and 2,650 m (6,560 and 8,690 ft). It forms the head of the Reintal valley and has been shaped by a combination of weathering, karstification and glaciation. The area contains roches moutonnées, dolines and limestone pavements as a consequence of the ice ages. In addition, moraines have been left behind by various glacial periods. The Platt was completely covered by a glacier for the last time at the beginning of the 19th century. Today 52 percent of it consists of scree, 32 percent of bedrock and 16 percent of vegetation-covered soils, especially in the middle and lower areas.

Climate

The climate is tundra (Köppen: ET), maintaining the only glacier present in Germany, which has observed its reduction over the years. From a climatic perspective the Zugspitze lies in the temperate zone and its prevailing winds are Westerlies. As the first high orographic obstacle to these Westerlies in the Alps, the Zugspitze is particularly exposed to the weather. It is effectively the north barrier of the Alps (Nordstau der Alpen), against which moist air masses pile up and release heavy precipitation. At the same time the Zugspitze acts as a protective barrier for the Alpine ranges to the south. By contrast, Föhn weather conditions push in the other direction against the massif, affecting the region for about 60 days per year. These warm, dry air masses stream from south to north and can result in unusually high temperatures in winter. Nevertheless, frost dominates the picture on the Zugspitze with an average of 310 days per year.

For the decades from 1961 to 1990 (designated by the World Meteorological Organization as the "normal period") the average annual precipitation on the Zugspitze was 2,003.1 mm; the wettest month being April with 199 mm, and the driest, October with 108.8 mm. By comparison the values for 2009 were 2,070.8 mm, the wettest month being March with 326.2 mm and the driest, January, with 56.4 mm. The average temperature in the normal period was −4.8°C, with July and August being the warmest at 2.2°C and February the coldest with −11.4°C. By comparison the average temperature in 2009 was −4.2°C, the warmest month was August at 5.3°C and the coldest was February at −13.5°C. The average sunshine during the normal period was 1,846.3 hours per year, the sunniest month being October with 188.8 hours and the darkest being December with 116.1 hours. In 2009 there were 1,836.3 hours of sunshine, the least occurring in February with just 95.4 hours and the most in April with 219 hours. In 2009, according to the weather survey by the German Met Office, the Zugspitze was the coldest place in Germany with a mean annual temperature of −4.2°C.

The lowest measured temperature on the Zugspitze was −35.6°C on 14 February 1940. The highest temperature occurred on 5 July 1957 when the thermometer reached 17.9°C. A squall on 12 June 1985 registered 335 km/h, the highest measured wind speed on the Zugspitze. In April 1944 meteorologists recorded a snow depth of 8.3 metres. Nowadays, snow completely melts during summer, but in the past snow might resist the summer months, the last case when the snow failed to melt during the whole summer season was in 2000.

Geology

The geological strata composing the mountain are sedimentary rocks of the Mesozoic era, that were originally laid down on the seabed. The base of the mountain comprises muschelkalk beds; its upper layers are made of Wetterstein limestone. With steep rock walls up to 800 metres high, it is this Wetterstein limestone from the Upper Triassic that is mainly responsible for the rock faces, arêtes, pinnacles and the summit rocks of the mountain. Due to the frequent occurrence of marine coralline algae in the Wetterstein limestone it can be deduced that this rock was at one time formed in a lagoon. The colour of the rock varies between grey-white and light grey to speckled. In several places it contains lead and zinc ore. These minerals were mined between 1827 and 1918 in the Höllental valley. The dark grey, almost horizontal and partly grass-covered layers of muschelkalk run from the foot of the Great Riffelwandspitze to the Ehrwalder Köpfe. From the appearance of the north face of the Zugspitze it can be seen that this massif originally consisted of two mountain ranges that were piled on top of one another.

Flora

Since the 16th century sheep grazing has been practiced on the Zugspitzplatt. Currently there are about 400 sheep maintained on Zugspitzplatt.

The shaded and moist northern slopes of the massif like, for example, the Wettersteinwald, are some of the most species-rich environments on the Zugspitze. The mountain pine grows at elevations of up to 1,800 metres. The woods lower down consist mainly of spruce and fir, but honeysuckle, woodruff, poisonous herb paris, meadow-rue and speedwell also occur here. Dark columbine, alpine clematis, blue and yellow monkshood, white corn lily, stemless carline thistle, false aster, golden cinquefoil, round-leaved saxifrage, wall hawkweed, alpine calamint and alpine forget-me-not flower in the less densely wooded places, whilst cinquefoil, sticky sage, butterbur, alpenrose, Turk's cap lily and fly orchid thrive on the rocky soils of the mountain forests. Lily of the valley and daphne also occur, especially in the Höllental, in Grainau and by the Eibsee.

Bilberry, cranberry and cowberry are restricted to dry places and lady's slipper orchid occurs in sheltered spots. Below the Waxenstein are fields with raspberries and occasionally Fragaria vesca too. The alpine poppy and purple mountain saxifrage both thrive up to a very great height. On the scree slopes there are Thlaspi and mouse-ear chickweed as well as Dryas octopetala, alpine toadflax, Lamiaceae and Saxifraga moschata. Following snowmelt dark stonecrop and snow gentian are the first to appear, their seeds beginning to germinate as early as August. Other well-known alpine plants like edelweiss, gentians and, more rarely, cyclamen also flower on the Zugspitze.

Fauna

The rocks around the Zugspitze are a habitat for chamois, whilst marmots are widespread on the southern side of the massif. At the summit there are frequently alpine choughs, drawn there by people feeding them. Somewhat lower down the mountain there are mountain hare and the hazel dormouse. Alpine birds occurring on the Zugspitze include the golden eagle, rock ptarmigan, snow finch, alpine accentor and brambling. The crag martin which has given its name to the Schwalbenwand ("Swallows' Wall") at Kreuzeck is frequently encountered. The basins of Mittenwald and Seefeld, as well as the Fern Pass are on bird migration routes.

The viviparous lizard inhabits rocky terrain, as does the black alpine salamander known locally as the Bergmandl, which can be seen after rain showers as one is climbing. Butterflies like Apollo, Thor's fritillary, gossamer-winged butterfly, geometer moth, ringlet and skipper may be seen on the west and south sides of the Zugspitze massif, especially in July and August. The woods around the Zugspitze are home to red deer, red squirrel, weasel, capercaillie, hazel grouse and black grouse. On the glaciers live glacier fleas (Desoria saltans) and water bears.

Glaciers

Two of Germany's four glaciers are found on the Zugspitze massif: the Höllentalferner and Northern Schneeferner.

Höllentalferner

The Höllentalferner lies northeast of the Zugspitze in a cirque below the Jubilee Ridge (Jubiläumsgrat) to the south and the Riffelwandspitzen peaks to the west and north. It has a northeast aspect. Its accumulation zone is formed by a depression, in which large quantities of avalanche snow collect. To the south the Jubiläumsgrat shields the glacier from direct sunshine. These conditions meant that the glacier only lost a relatively small area between 1981 and 2006. In recent times the Höllentalferner reached its greatest around 1820 with an area of 47 hectares. Thereafter its area reduced continually until the period between 1950 and 1981 when it grew again, by 3.1 hectares to 30.2 hectares. Since then the glacier has lost (as at 2006) an area of 5.5 hectares and now has an area of 24.7 hectares. In 2006 the glacier head was at 2,569 m and its lowest point at 2,203 metres.

Schneeferner

Southwest of the Zugspitze, between the Zugspitzeck and Schneefernerkopf, is the Northern Schneeferner which has an eastern aspect. With an area of 30.7 hectares (2006) it is the largest German glacier. Around 1820 the entire Zugspitzplatt was glaciated, but of this Platt Glacier (Plattgletscher) only the Northern and Southern Schneeferner remain. The reason for the relatively constant area of the Northern Schneeferner in recent years, despite the lack of shade, is the favourable terrain that results in the glacier tending to grow or shrink in depth rather than area. In the recent past the glacier has also been artificially fed by the ski region operators, using piste tractors to heap large quantities of snow onto the glacier in order to extend the skiing season.

At the beginning of the 1990s, ski slope operators began to cover the Northern Schneeferner in summer with artificial sheets in order to protect it from sunshine. The Northern Schneeferner reached its last high point in 1979, when its area grew to 40.9 hectares. By 2006 it had shrunk to 30.7 hectares. The glacier head then lay at 2,789 m and the foot at 2,558 metres.

The Southern Schneeferner was surrounded by the peaks of the Wetterspitzen and the Wetterwandeck. It was also a remnant of the once great Platt Glacier. The Southern Schneeferner was declassified as a glacier in 2022. The Southern Schneeferner also reached its last high point in 1979, when it covered an area of 31.7 hectares. This had shrunk by 2018 to just 1.7 hectares.

Caves

Below the Zugspitzplatt chemical weathering processes have created a large number of caves and abîmes in the Wetterstein limestone. In the 1930s the number of caves was estimated at 300. By 1955 62 caves were known to exist and by 1960 another 47 had been discovered. The first cave explorations here took place in 1931. Other, largest exploratory expeditions took place in 1935 and 1936 as well as between 1955 and 1968. During one expedition, in 1958, the Finch Shaft (Finkenschacht) was discovered. It is 131 metres deep, 260 metres long and has a watercourse. There is a theory that this watercourse could be a link to the source of the River Partnach.

In 1985, during the construction of the uppermost section of a new railway tunnel to the Zugspitzplatt ski area, massive ice was unexpectedly encountered across the entire tunnel cross-section, extending for a further 19 meters. At the altitude of 2570 meters, the bedrock lays within a permafrost area, the ice temperatures were -1.5°C. The ice was evidently part of an ice-filled cave system within the extensive karst region of the Zugspitze.

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