A tunnel made with Dreamup Toys Wooden Railway Block Platform that combines trains and LEGO DUPLO! | Educational toys, Wooden train, Wooden train track
Lego Duplo Train Green Cave Tunnel Piece With Cave Road Sign | eBay
LEGO Set 3334-1 Intelli-Train Tunnel (2002 Duplo > Trains) | Rebrickable - Build with LEGO
Number Tunnel DUPLO
BRIO & Lego Duplo tunnel/ bridge crossing by diktux | Download free STL model | Printables.com