Budapest Inferno - The secret of Molnár János Cave

History of Molnár János Cave:

Under the thriving metropolis of Budapest, only meters from the Danube’s riverbanks, lies an underground wonder: the submerged Molnár János Cave, Europe’s largest underwater  active thermal water cave. Deep thermal karst waters are responsible for the formation of the cave, which is still actively forming, albeit very, very slowly.

In the 19th century, János Molnár, a pharmacist, investigated the dry section of Molnár János cave. He also analysed the health benefits of the spring water that feeds Malom Lake, at the entrance of the cave. Based on his results, he concluded that there is a huge underwater cave system beyond the known section of the cave.

The underwater exploration started in the 1950s, and  divers successfully explored and charted more than 400 meters of the Molnár János cave system only in the 1970s and 1980s. Then, in 2002, divers found a new passage. The new part was considerably larger, with the biggest charted hall over 80 metres long. More remains to be discovered.

Designed as a protected area in 1982, Molnár János cave is now being explored and studied by geologists, biologists and chemists alike.

About the film:

Cave divers and biologists explore the largest underwater thermal water cave in Europe. This up-close look at the Molnár János Cave reveals never before seen underground wonders of evolution, and previously unknown species below the capital of Hungary. Life thrives in an underwater world devoid of sunlight.

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