C504 Chaotic World Secret

In the open space, a 30 meter wide cave appeared on the surface of the ground. Standing at the edge of the cave and looking down, one could see a stone staircase spiraling down along the edge of the cave wall.

And on this stone staircase that extended all the way down to the end of one's line of sight, there would be a circular platform that extended inwards every once in a while. Obviously