Ravensburger Gravitrax Volcano Accessory - Marble Run & Stem Toy For Boys & Girls Age 8 & Up - Accessory For 2019 Toy Of The Year Finalist Gravitrax

Brilliant fun

Definitely one of the better Gravitrax expansion kits we have bought. Solves an issue of getting balls back uphill!

Love this add on . It works really well when grouping a few together too but equally well as a quick way to lift a marble to a higher level . Enjoyed by everyone in our house

Box picture clearly shows '4x gravity spheres' - you don't get any! Zero!

Excellent add on for the gravitrax marble set, clever design work allows a 2nd run through the piece without the jump (unless you reset it) and carries on at the lower level.