World’s Deepest Underwater Cave

We had never heard of the Hranice Abyss before catching sight of this article. Hranická Propast, in the Czech Republic, is the world’s deepest underwater cave with a depth of 1,325 feet (404m), as measured by an ROV. The cave was formed by hot, CO2-filled, mineral water bubbling up from an underground spring.

Full article at: ThomasInsights 15sep21