Local geology

The characteristic pale grey mountains which surround Altaussee are made of limestone, a carbonate rock. The age of these rocks are Triassic and Jurassic. The mountains themselves did not form until the Cenozoic, when immense forces between the colliding African and Eurasian plates caused the mountains to be uplifted. The limestones which make up the mountains are white to pale grey in colour, and formed relatively deep in the ancient Tethys ocean. Because the rocks formed so deep, fossils are rare. However, corals are reported from the lower slopes of Loser mountain.

Tectonics: a major tectonic fault line runs directly beneath the Lake Altaussee, approximately east–west, and terminates in the valley west of the Seewiese. The fault is seismically active, with small earthquakes common. On a hot, clear day in August 1998, a small earthquake on the fault (M=3) caught summer bathers by surprise with a low, rumbling sound and, a few minutes later, unusually high waves.

Evaporites: Large evaporite reserves are present in the Sandling mountain, formed as a result of a major period of marine lowstand, when the sea level was low and the sea dried out. Panning and surface-level drift mining of the deposits dates back to Roman times, thanks to evidence from archaeological excavations in the 1990s, followed by similar local works from 200-400 AD.^[4] By 1147 the mines had become a commercial venture, controlled by the Rein Abbey near Graz. In 1211 the mines were nationalised by Leopold VI, Duke of Austria, who transferred control to Unterlupitsch. With operations later transferred to Bad Aussee, investment in 1319 allowed the opening of the Steinberg tunnel. Followed by further periods on investment, by 1334, the mines were operated under license by the private Hallinger Union who employed 120 people, producing about 10,000 tonnes of product per annum. Renationalised by Frederick III in 1445, 120 people produced circa 10,00 tonnes of product per annum until the early 20th century. In 1906, a new brine pipeline through the Rettenbach Valley to Bad Ischl to supply the Solvay Works located in the market town of Ebensee. It is for this reason that Altaussee, and other local towns and villages such as Hallstatt, are now part of the Salzkammergut region. Production volumes in the following years quadruple, and employees double to 238.

By 1938, the salt mine had come to the attention of Adolf Hitler. Located close to his intended museum complex in Linz, inside the mine the conditions were constant: between 40 and 47 degrees; about 65 percent humidity; with the deepest tunnels more than a mile inside the mountain, safe from enemy bombs. The Nazi's built floors, walls, and shelving as well as a workshop deep in the chambers.^[5]

Post-war after recovery of the art, brine production resumed. The mines are still operational today, and brine is pumped to the market town of Ebensee. In 2008, 61 employees produced 1,506,000m³ of brine, with a salt content of 450,000 tons. It is for this reason that Altaussee, and other local towns and villages such as Hallstatt, are now part of the Salzkammergut region.

World War II

After the annexation of Austria into the German Third Reich in 1938 the entire Ausseerland region (a small region in Styria consisting of Bad Aussee, Grundlsee and Altaussee) was incorporated into the new administrative unit Reichsgau Oberdonau (Upper Austria). The autonomy of the municipalities Bad Aussee, Grundlsee and Altaussee was dissolved and one single Bürgermeisterei (mayoralty) was established in Bad Aussee. The municipal offices of Altaussee and Grundlsee were henceforth field offices of Bad Aussee.^[10] The 29 country residences in possession of Jewish families were aryanized.^[11] In the following time the community attracted many top Nazis who inhabited these aryanized country estates. For example, three Nazi Gauleiter regularly spent their holidays in Altaussee: August Eigruber, Konrad Henlein and Hugo Jury.^[12] The Nazi propaganda minister Joseph Goebbels spent his holidays in an "aryanized" country residence at the neighbouring Grundlsee.^[13]

As of spring 1944, there was a permanent shelter for Wehrmacht deserters, draft dodgers and resisters hidden in the rough terrain of the Totes Gebirge north of the village. This hideout called Igel (hedgehog), was provided with food by trusted third parties in the population.^[14] At the end of the war the Igel sheltered 35 people.^[15]

The Ausseerland region was part of the so-called Alpine fortress. It is for this reason, why 1944/45 it became a last refuge for Nazi party, government and army staffs. Also entire pro-fascist governments that had been used by the Nazis in the Balkans took refuge in the region.^[16] As of the end of the war, nine pro-Nazi governments in exile from Eastern Europe stayed in Altaussee.^[17] Günther Altenburg for example served as head the Department of Foreign Affairs of Bulgaria and Romania in Altaussee, where he oversaw the Germany-impaired exiled governments of Bulgaria and Romania (see also: Bulgarian government-in-exile).^[18] Ernst Kaltenbrunner, head of the SS-Reichssicherheitshauptamt, moved his headquarters from Berlin to the Villa Kerry in Altaussee in late April 1945. From here, with the help of Wilhelm Höttl, he was trying to contact the Western Allies to reach a separate peace.^[19] At the end of the war several high Nazi and SS officials, like August Eigruber,^[17] Hugo Jury,^[17] Adolf Eichmann,^[20][21][22] Franz Stangl^[23] (commandant of the Sobibor and Treblinka extermination camps) and Anton Burger^[24] (Commandant of Theresienstadt concentration camp), tried to go into hiding in the village.

On 8 May 1945 a reconnaissance squadron of the U.S. Seventh Army reached the Ausseerland region followed by the main force of the U.S. Army on the next day. Previously to the arrival of the U.S. Army, a self-employed civilian government was formed in Bad Aussee which preserved the order and ensured the supply of the population.^[25] Ernst Kaltenbrunner fled to the Wildensee alp nearby Altaussee where he was captured by a U.S. patrol on 12 May 1945. At the end of the war a box of 60 kg Nazi gold was found near the mansion in which Kaltenbrunner had lived. Much of it has been lost since the turmoil of the early post-war days.^[26]

In the two great wars of the 20th Century, a total of 162 citizens of Altaussee fell as soldiers (44 in World War I and 118 in World War II).^[27]

On 1 July 1948 the village became part of the Austrian state Styria again. Until 1955 Altaussee was part of the American occupation zone in Austria.