In 1912, an underground blasting operation in this Austrian gypsum mine went wrong and caused over 5 million gallons of water to flood the mine. During WWII, 2,000 Germans built one of the first jet fighters here. Over 10 million tourists have visited this underground cave and mine.
Commenting disabled.
Up Next
-
The Secret Network of Germans Conspiring to Assassinate Hitler: An American Spymaster in WWII (2017)
-
Traunsee - the second largest lake within Austria
-
Europe's Largest Underground Lake, Seegrotte Hinterbrühl, Austria - Unravel Travel TV
-
Malenist Vlog 02 || Achen Lake (Achensee) in Winter || Largest Lake inTirol Austria
-
Hinterbruhl, Austria has Europe's largest underground lakes
-
Episode 7 - Europe Trip WWII & The Western Front July 2022 - Germany Part 3
-
Seegrotte - Hinterbrühl, Austria: Europe's Largest Underground Lake
-
00:09
Cow are You ? ???????????? Waking up in Austrian Spring ???? There is a secret lake in my hometown o
-
How Do German Schools Teach About WWII? REACTION!! | OFFICE BLOKES REACT!!
-
Secret door to the largest monastery library in the world in Austria
-
The Green Hills Of Tyrol- The Battle Is O'er- Scottish Bagpipes
-
Dolina Zillertal: Tyrol, Austria 2013
-
A Magic Day In Tyrol (by Georg Riha) (HQ)
-
FIREWORKS DISPLAY 2020 VIENNA AUSTRIA #HappyNewYearVIENNA
-
Tyrol Travel Video Guide
-
Unpretentious Tyrol Teens Play Relaxing Music
-
Konis Hupen
-
Volksmusik Tirol (A Bela Paisagem Da Tyrol Merece Reprodução Em Alta Definição HD)
-
Austria, The Tyrol
-
Südtirol - Alto Adige - South Tyrol
