The Guide Had No Idea What It Was
Even the guide they were with had never seen anything like it. Of course, he’d seen crabs pass through here before, but never this many, and especially not all jumbled up like this. He was really interested as to why these crabs were grouped together like this. He got a brilliant idea after some thought.
His Idea
He had no idea what was causing it at first, but after some consideration, he concluded that there had to be something underneath. More crabs continued to approach the mound, so the guise was certain that something beneath them was drawing them. The only question now was what was beneath the crab mountain.