Stalactites
The team was amazed when they discovered stalactites as they approached the opening. This discovery was particularly special because it was unprecedented to find such formations at this depth underwater. If it had been found in a typical cave system, it would not have been as significant. What made this discovery even more remarkable was that these stalactites were more than 150,000 years old, and they typically only form in dry caves.
Something Remarkable
The incredible discovery made by these explorers indicated that the Great Blue Hole was formerly connected to a bigger cave system that was likely formed on dry land. While this was an exciting revelation, it also brought attention to a larger concern.