Atmosphere: "Moist black velvet" night, oppressive heat, constant animal sounds.
Key Locations: Zaroff's chateau (luxurious, taxidermy-filled), training grounds, kennels, cliffs where Rainsford jumps.
The island's exact coordinates are never given — isolation is thematic. "Ship-Trap" refers to Zaroff's channel lights luring ships to wreck, providing fresh "game."