420 Fossil free maze

This exhibit is a game that learns the visitor to avoid  fossil fuels. . By rotating the maze the ball can find its way from the center to a small container at the rim. The challenge is to avoid all fossil fuel  holes and figure out how to rotate the maze so that the ball can find a way through the the openings in the walls.  

Maintenance: No
Material: MDF, plywood, 
Colour: Graphite, green
Maze diameter: 1100 mm

Socket height: 785 mm