Subway, Underground Tunnel Construction Jigsaw Puzzle by Baranozdemir - Pixels
Time Warp Puzzle – Tuttle Twins Store
Puzzle Collector Art 1000 Piece Tunnel of Love Jessica Wasilewski vintage NEW FS | eBay
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
The Journeyman Project 3: Legacy of Time Tunnel Puzzle Solution Map for PC by MetroidMoo - GameFAQs
Time and space tunnel-Laser cut basswood mechanical 3D Puzzle 335pcs | eBay