History
The Yellow Claw's Subsurface Citadel was a massive aquatic structure deep in New York City's harbor. It was equipped with a sub-surface lock for a submersible aircraft. The interior was a labyrinth full of alarms, electronic eyes, and hundreds of traps. Walls were painted like optical illusions and stairs appeared upside down, with defenses that included heat-seeking missile-like darts and spiked walls that were rigged to close when the floor was touched by weight.[2]