[Rockhounds] No One Knows What Lurks at the Bottom of This Freakishly Deep Submerged Cave

[Kreigh Tomaszewski]

New research suggests Hranice Abyss—the world’s deepest freshwater cave—is
around 0.6 miles (1 kilometer) deep, which is more than twice the depth of
previous estimates.

Back in 2016, scientists measured the depth of Hranice Abyss at 1,552 feet
(473 meters), but they suspected it was deeper because their remotely
operated vehicle had reached the end of its fiber-optic communication
cable. Now, using multiple geophysical imaging techniques, a research team
led by Radek Klanica from the Czech Academy of Sciences has established a
new estimated depth for Hranice Abyss, which is at least 0.6 miles (1
kilometer) deep. A paper
<https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2020JF005663>
describing
this research was recently published in the Journal of Geophysical
Research: Earth Surface.

https://gizmodo.com/no-one-knows-what-lurks-at-the-bottom-of-this-freakishl-1844987777