Pumice is a strange stone. As its name suggests, the existence of this stone completely defies gravity. It has actual weight but is suspended in the air and never falls. It is one of the seven strange stones.
Between the misty clouds and sky, a huge black shadow is moving slowly. It is hidden in the clouds and it is difficult to see its full picture. It can only be seen through the faint shadow that it is a small island, the largest pumice known in the world - Sky Island.
There is a village on the island. It is not named, but it can also be called a hidden village.