Ravensburger GraviTrax Extension Tunnel

With the Extension Tunnels, impressive surprise moments are built into the GraviTrax track - for even more fun. The Extension Tunnel contains many different components for enlarging the ball track. The tunnel elements can be used to create great surprise moments. Combined with any GraviTrax starter set, the Extension Tunnel brings even more variety and ball fun to the GraviTrax universe. Where does the ball disappear in 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 researching the rolling behavior of the balls, the understanding of science is sharpened and gravity can be experienced first hand. The GraviTrax universe includes three exciting lines - CORE, PRO and POWER. All GraviTrax lines and products can be freely combined with one another. The GraviTrax universe can be expanded infinitely through countless extensions with classic building elements or stones that enable special action and tricks. This way, everyone can tinker, try out and build beyond themselves.