“Elias,” he said, voice hollow, disbelieving. There was a pile of gear by the wall, tanks, fins, a rusted knife, all slick with age and salt. Diving equipment. Not theirs. Elias’s pulse hammered. “Someone else has been here.”
Before Edwin could answer, light flickered from deeper within the cave. Faint, unsteady, like the pulse of a dying lantern. They followed it in silence, their boots sloshing through the shallows, until the tunnel opened into a chamber larger than any Elias had imagined.