The Tunnel of Time Puzzle – The Shop of Many Things
Mount Rushmore National Memorial, South Dakota, Tunnel Scene, 1000 piece jigsaw puzzle – Lantern Press
Amazon.com: Lukovee Cat Tunnel Toy, Crackle Paper Collapsible Tube Three Connected Run Road Way Tunnel Catnip House with Fun Ball Puzzle Exercising and Playing (Purple, 4 Ways with Hanging Toy) : Pet