Polish explorer Krzysztof Starnawski’s fascination together with the Hranick Propast, or Hranice Abyss, an underwater cave in the Czech Republic, began in 1999. The diver, who once held the modern world record for the deepest dive (283-meters) that has a closed circuit rebreather, says the cave’s limestone unusual formation led him to suspect it was subsequently a whole lot deeper than his dives had taken him.
Armed using a grant from National Geographic, Starnawski and the team returned in 2014. This period, the diver were able to reach 200 meters, or what he thought was the foot of the cave, realise a “squeeze passage” from the rock that ended in another deep, dark, tunnel. Unable to go any more, he lowered his probe to its maximum lifetime of 384 meters, whilst still being wouldn’t flattened. Oddly enough, this was merely a 8 meters shy of Italy’s Pozzo del Merro, by far the deepest underwater cave.
Believing that Hranick Propast could easily surpass that depth, the 48-year-old Polish cave explorer returned in 2015. This time, Starnawski have the “squeeze passage” which in fact had widened substantially since his previous visit and swam all the way down to 265 meters. Still finding no bottom, the explorer lowered the probe to 370 meters before it was stopped by way of a pile of debris, almost certainly through the collapse with the squeeze passage.
To investigate aside from the rubble, Starnawski returned to your area again in 2016. This time around, he was accompanied by a remotely-operated underwater robot (ROV). To give the ROV a good chance to achieve the cave’s floor, Starnawski scuba dived 200 meters to fit a new line with the ROV to adhere to. Then on September 27, the c’s in the surface guided the ROV to your line marker, and watched while it made its strategy to a record-breaking depth of 404 meters!
While that may be enough to get the title of your world’s deepest underwater cave, the Czech Speleological Society believes the cave is even deeper. People say that the robot was limited by the length of the rope and speculate how the floor with the Hranick Propast goes well past 404 meters. Whether that is the case shall be revealed soon. Food preparation tools Starnawski along with his team are determined to return and continue their quest to unveil every one of the secrets this mysterious, seemingly unending cave has to offer.
While the Hranick Propast is definitely the world’s deepest underwater cave, it’s not at all the deepest known cave on Earth. That claim is considered the Krubera Cave. Based in the country of Georgia, it extends an astounding 2,197 meters underground. That will put it in perspective, that could be deeper versus the length of the Burj Khalifa, Eiffel Tower, the truly amazing Pyramids of Giza, the Empire State Building, the Washington Monument, as well as the Chrysler building, combined!
Resources: phys.org, nationalgeographic.com,abc.ne.au,