Question: What is the name of the former hotel in the Alps now used as an environmental research station which lies at the summit of the Zugspitze in Germany?

full_context: Document 1: Zugspitze Glacier Cable Car: The Zugspitze Glacier Cable Car (German: "Zugspitz-Gletscherbahn" ) is a 1,000 metre long cable car on the Zugspitze, Germany's highest mountain. It was opened in 1992 and links the plateau of the "Zugspitzplatt" directly with the summit, 360 metres higher. Since the mountain station of the Bavarian Zugspitze Railway was moved from the Schneefernerhaus to the "Platt", the Schneefernerhaus and the old cableways, which ran down into the valley from the "Platt" (the "Hangbahn" and "alte Gletscherbahn") and up to the summit ("Gipfelseilbahn"), have lost their importance.
Document 2: Garmisch-Partenkirchen: Garmisch-Partenkirchen (] ) is a ski town in Bavaria, southern Germany. It is the seat of government of the district of Garmisch-Partenkirchen (abbreviated "GAP"), in the Oberbayern region, which borders Austria. Nearby is Germany's highest mountain, Zugspitze, at 2,962 m (9,718 ft.).
Document 3: Wetterspitzen: The Wetterspitzen are three of the rocky peaks on a mountain ridge in the Wetterstein mountains in the central part of the Eastern Alps in Germany. They lie two kilometres, as the crow flies, southwest of Germany's highest peak, the Zugspitze, on the border between the Austrian province of Tyrol and the German state of Bavaria. The "Wetterspitzen" form the southwest perimeter of the Zugspitze ledge ("Zugspitzplatt"); below and to the east is the ski region on the Schneeferner with its research station, the Schneefernerhaus.
Document 4: Piz Platta: Piz Platta is the highest peak in the Oberhalbstein Alps. It is 3392 metres high (Source: Landeskarte der Schweiz no.1256 - 1991), and is notable for its similarity in shape to the Matterhorn. Piz Platta is located between the localities of Avers and Mulegns, both in the Swiss canton of Graubünden.
Document 5: Swiftcurrent Auto Camp Historic District: The Swiftcurrent Auto Camp Historic District preserves a portion of the built-up area of Glacier National Park that documents the second phase of tourist development in the park. After the creation of a series of hotels for train-borne visitors including the nearby Many Glacier Hotel, courtesy of the Great Northern Railway's hotel concession, facilities were developed for the increasing numbers of automobile-borne tourists, drawn to Glacier by the Going-to-the-Sun Road. The Swiftcurrent Auto Camp at Swiftcurrent Lake was created for these new tourists. It includes a rustic general store, built in 1935 by the Glacier Park Hotel Company, surrounded by a number of log tourist cabins., as well as a shower and laundry house and other supporting structures.
Document 6: Tip-Top House: The Tip-Top House is a historic former hotel in Mount Washington State Park in Sargent's Purchase, New Hampshire, United States. Built in 1853, it is the oldest surviving building in the summit area of Mount Washington, and is believed by the state to be the oldest extant mountain-top hostelry in the world. It features exhibits concerning the mountain's history. Located near the modern summit building and other visitor facilities, it is open for a fee to visitors from early May to early October. It was added to the National Register of Historic Places in 1982.
Document 7: Zugspitze: The Zugspitze, (] ) at 2,962 m (9,718 ft) above sea level, is the highest peak of the Wetterstein Mountains as well as the highest mountain in Germany. It lies south of the town of Garmisch-Partenkirchen, and the Austria–Germany border runs over its western summit. South of the mountain is the "Zugspitzplatt", a high karst plateau with numerous caves. On the flanks of the Zugspitze are three glaciers, including the two largest in Germany: the Northern Schneeferner with an area of 30.7 hectares and the Höllentalferner with an area of 24.7 hectares. The third is the Southern Schneeferner which covers 8.4 hectares.
Document 8: Große Sandspitze: The Große Sandspitze in Tyrol is  m (AA) and the highest mountain in the Gailtal Alps, a mountain range of the Southern Limestone Alps. It is located within the subrange of the Lienz Dolomites and is locally called the "Sunnspitz".
Document 9: Eibsee Cable Car: The Eibsee Cable Car, which opened in 1963, is a cable car which connects the lower station (973 m above sea level) near lake Eibsee with the top station at 2950 m above sea level next to the summit of Zugspitze, Germany's highest mountain on the border to Austria. The cable car was built to provide a faster access to the Zugspitze from its German side, as the cog railway from Garmisch-Partenkirchen does not go directly to the summit and takes much longer. The "Eibsee Cable Car" belongs to "Bayerische Zugspitzbahn Bergbahn AG", the company operating the cog railway and most cable cars, gondola lifts and chairlifts in the Garmisch-Partenkirchen area. It is thus possible to make round trips using both the cog railway and the cable car. On the Austrian side, there is the Tyrolean Zugspitze Cable Car which starts at Ehrwald and meets the Eibsee Cable Car on the top.
Document 10: Schneefernerhaus: The Schneefernerhaus is a former hotel in the Alps, that is now used as an environmental research station. It lies immediately below the summit of the Zugspitze at a height of 2,650 m and was opened on 20 June 1931. It used to house the top station of the Bavarian Zugspitze Railway as well as a tourist hotel. There was then a cable car from the Schneefernerhaus to the Zugspitze summit. In 1938 a gallery for pedestrians was opened from the ridge station of the Tyrolean Zugspitze Cable Car to the Schneefernerhaus. From 1945 to 1952 the hotel was commandeered for use as a "recreation facility" by the US Forces.
Document 11: Alps: The Alps ( ; French: "Alpes" ] ; German: "Alpen" ] ; Italian: "Alpi" ] ; Romansh: "Alps" ; Slovene: "Alpe" ] ) are the highest and most extensive mountain range system that lies entirely in Europe, stretching approximately 1,200 km across eight Alpine countries: Austria, France, Germany, Italy, Liechtenstein, Monaco, Slovenia, and Switzerland. The mountains were formed over tens of millions of years as the African and Eurasian tectonic plates collided. Extreme shortening caused by the event resulted in marine sedimentary rocks rising by thrusting and folding into high mountain peaks such as Mont Blanc and the Matterhorn. Mont Blanc spans the French–Italian border, and at 4810 m is the highest mountain in the Alps. The Alpine region area contains about a hundred peaks higher than 4000 metres (just over 13,000 feet).
Document 12: Lausche: Lausche (Czech: "Luž" ), is, at 793 m , the highest peak of the Lusatian Mountains and the highest mountain in the German part of the Upper Lusatia region. The conical mountain is part of the Zittau Mountains range, situated on the border of the German state of Saxony with the Bohemian region of the Czech Republic.
Document 13: Hochwanner: At 2744 m , the Hochwanner (formerly: "Kothbachspitze") is the second highest mountain in Germany after the Zugspitze (if the somewhat higher Schneefernerkopf is only considered as a sub-peak of the Zugspitze). In addition the Hochwanner is the highest peak on the main ridge of the Wetterstein ("Wettersteinhauptkamm") running from "Gatterl" to the Upper Wettersteinspitze ("Oberen Wettersteinspitze") above Mittenwald in an east-west direction. From the Hochwanner massif there is an all-round view of the Rein valley ("Reintal"), the Leutasch valley in Austria, the Gais valley, the Zugspitze, the Mieming Chain, the Jubiläumsgrat, the Karwendel mountains and far into the central Alps.
Document 14: Rhön Mountains: The Rhön Mountains (German: "Die Rhön" (   )) are a group of low mountains (or "Mittelgebirge") in central Germany, located around the border area where the states of Hesse, Bavaria and Thuringia come together. These mountains, which are at the extreme southeast end of the East Hesse Highlands ("Osthessisches Bergland"), are partly a result of ancient volcanic activity. They are separated from the Vogelsberg Mountains by the river Fulda and its valley. The highest mountain in the Rhön is the Wasserkuppe (950.2 m ) which is in Hesse. The Rhön Mountains are a popular tourist destination and walking area.
Document 15: Snowy Range Lodge: The Snowy Range Lodge, formerly known as the Libby Lodge, is located in the Snowy Range of Medicine Bow National Forest in Wyoming. The three-story log lodge was built in 1925 as the Libby Lodge. From 1925 to the mid-1970s, the Lodge served as a classic mountain lodge, sleeping up to 75 people in the main lodge and in ten cabins on 40 acres leased from the US Forest Service. In the mid-1970s, it fell into a state of abandonment, neglect, and disrepair such that the Forest Service planned to burn and bulldoze it as it presented a liability risk to National Forest users who might venture inside.
ground_truth: Schneefernerhaus