There's something strange about those fires, so you decide to test them. You go back to the boat and bring the oars into the cave, using one to poke the center of the circle.
Nothing happens, so you figure it must be safe to enter.
As you step into the circle, an incredible calm washes over you. The swishing of the water, the waves outside, the feeling of the sand in your boots and the soreness in your hands from rowing out here... it all seems to vanish, everything but the flickering and warmth of the fires. You've never felt this... rested before. You almost feel like drifting off to sleep. Almost, but not quite.
The feeling is unusual, but not unwelcome. You stand there for a few minutes, but nothing further seems to happen, so you decide to investigate the other strange sight - the wall of glowing fog. As you turn towards it, you hear the calling again. It is stronger than ever, almost intelligible. You walk towards the fog, cautious, your boots making a small splash with each step, the sound echoing in the small cave. The fog seems almost solid. You put your hand to it. No, not solid. The feeling is strange. Almost like fluid, like a wall of honey. With a push, your hand slowly passes through, and taking a deep breath, you follow with the rest of your body.
You emerge into a much more brightly lit chamber.
A sturdy iron chandelier hangs from the high ceiling, giving the room a bright, soft light. The stone floor seems to have been smoothed, too, at least in the middle. Who could have done this, you wonder. Why would someone build here?
But your wondering is cut short by a noise:
"Oh Boss!""I'm all about -your skull-!""So taking it"