It was too dark to see anything inside.
But for a supernatural person, that was no great problem. Simply activating [Spirit Vision] would let them see easily in the dark and even examine traces of supernatural power.
Elliot peered into the entrance for a while, then looked up at the densely packed monsters above. He still did not activate [Spirit Vision].
There was something uncanny about this place. If [Spirit Vision] drew some gaze again, or simply made the monsters attack, he would be in trouble.
Although his spirituality had given no warning, it was better to be careful.
After some thought, he slipped a ring off his finger and tossed it into the hole.
The ring had no supernatural power. It was merely set with an ordinary luminous pearl.
The luminous pearl was the size of a coin and gave off a faint glow. In his previous life, Elliot might have worried about radiation, but this world even had the supernatural, so he did not bother worrying about such things.
The ring wobbled as it sank through the seawater. It did not sink quickly, and although its glow was faint, illuminating this rather narrow cave was not difficult.
Elliot widened his eyes as far as he could and looked closely.
The cave's inner walls were extremely smooth, made of a pale substance somewhat like jade, but without its lustrous quality.
Elliot kept feeling that the walls looked familiar. He seemed to have seen this material before.
The ring wobbled downward, its light descending from above. The passage went straight down, without even a fork.
There was nothing else.
No monsters, no writing or markings, not even any traces.
Although the walls were smooth, they were not straight. A short distance in, they curved slightly. The ring slid down along