GraviTrax Expansion Tunnels Animals & Pets and let the tranquillity of

and let the tranquillity of puzzle-solving transport you to the countryside

and 3 short plastic tracks

you can take your ball run to a whole new level

dedication and the simple pleasures of rural life

Each player has his own building blocks and tries to be the first to complete the building

GraviTrax Expansion Tunnels Animals & Pets and let the tranquillity ofGraviTrax Expansion Set: Tunnels Create the element of surprise with the GraviTrax Tunnels Expansion set! Use the tunnels to hide the marbles as they travel through your track. Combine the tunnels with your GraviTrax Starter Set for added mystery to your track. Will you be able to keep your eye on the marble as it rolls through the tunnels? GraviTrax Tunnel extension is a great tunnel system and provides on the ball track for many moments of surprise.