Into the Odd - The Iron Coral

A one-shot based on the 'into the odd' game: You are explorers in a strange industrial world of smoke, sea, rust, and impossible things. A jagged mass of metallic coral has risen from the water near the coast. People have gone in. None have come back. The boat scrapes against the side of the Iron Coral. Grey metallic growths rise from the sea like jagged bone. Dead fish roll in the foam. The boatman refuses to tie up. 'Three hours. Then I'm gone. Paid or not.' A rough dark slope leads down into the coral. The air coming from inside is cold, wet, and faintly sweet. What do you do?