The Tunnel extension contains many different components to extend the marble run. Great surprises can be created with the tunnel elements. Combined with any GraviTrax starter set, the Tunnel extension brings even more variety and ball fun to the GraviTrax universe. Where does the ball disappear into the tunnels and where does it come out again?
GraviTrax is a flexibly expandable, interactive marble run system for children aged 8 and over: With GraviTrax, children, teenagers and adults don't just build simple marble runs. They create unique marble run worlds. By freely designing the marble runs and exploring the rolling behavior of the balls, the understanding of science is sharpened and gravity can be experienced at first hand. The GraviTrax universe includes three exciting lines - CORE, PRO and POWER. All GraviTrax lines and products can be freely combined with each other. The GraviTrax universe can be expanded infinitely with countless extensions with classic building elements or bricks that enable special action and tricks. So everyone can tinker, try things out and build beyond themselves.
