@lndesta120282 I have not heard about this before. This is an unusual phenomenon. I immediately remembered an excerpt from the movie pirates of the Caribbean :) But if you are serious then where I live I have an ease and floating stones from Kiev. It is believed that the stones sailed on the water. Now these stones grow in the form of a cross directly from the ground. This is an unusual phenomenon and people read that these stones heal.
But the sail stones of the valley of death that you told about are really of great interest. This is not something we can see every day.
Thank you