human
Compose a short description of a spooky cavern with a plate and a phosphorescent blue glow.
assistant
The smooth, tubular passageway finally ends here at the bottom of the long gullet deep in the dragon's interior, culminating in a metallic plate that juts out like some mechanical imitation of an esophageal valve. The plate itself provides somewhat safer footing, allowing a glimpse over its edge. A quick peek reveals a phosphorescent blue glow that rises from the murkiness below to permeate the entire structure.