The Spiral Staircase and the Prestige Salts

A massive atoll of coral has grown up the spiral staircase. It's very obvious that it was put there as a natural foundation for coral growth. They surmise their their theory is that much like, you know, people do today where they will like sink old ships to give coral place to build coral wreaths on. somebody in the long ago past put this structure there for the intent of growing this coral and this coral has absorbed the prestige salts,. giving it some powerful mystical properties.