Diver Finds Structure on Ocean Floor — Then Finds Out Why It’s There

Presense of ice

Along the lower edge of the chamber, he spotted a long split in the wall. Above it, faint streaks filled the ceiling, branching like spiderwebs. Ice fracturing, maybe? He frowned. How could ice be present in the Gulf of Mexico? This place was known for its hot temperature. But it would turn out that there was more to this story than Eli thought.