human
Please generate a brief description of a mysterious cave in the sea with ridges, a cave, and a stony spire.
assistant
Lustrous black seawaters cradle the entire stone structure with harsh waves crashing against the craggy basin below. Shards of phosphorite and flagstone have been stamped into a narrow pathway along the fractured ridges climbing the bowed back of the cave. A particularly prominent circlet of gnarled rock caps the highest stony spire, filtering the ambient breezes that whip through the heartstopping viewpoint.