The “deepest-known” under-ocean sinkhole on the planet has been found—and it’s so deep that researchers haven’t yet reached the bottom.
Dubbed a “blue hole” or “karst cave” by scientists, the vertical marine cavern was explored at length during a scuba-diving expedition to Chetumal Bay, off the coast of Mexico’s Yucatan Peninsula, last December.
A new investigation at the site indicates that the Taam Ja’ Blue Hole (TJBH) extends at least 420 meters below sea level. To put it in perspective, that’s almost the height of the Trump Tower in Chicago, which measures a staggering 423 meters tall. It’s also 100 meters deeper than the height of the Eiffel Tower in Paris, which is 324 meters high....
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