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

An entranceway

A strange chill crept down his spine as he hovered beside what appeared to be an entranceway, partially obscured by sediment. It looked like a doorway—framed, recessed, and eerily intact. He tried to peek inside, but visibility was poor, almost a perfect darkness. His normal diving light wasn’t going to cut through this blackness. He wasn’t prepared for something like this.