giant rafting track marble run

You are the yellow marble on the rafting track.
From the entrance it goes 200 cm upwards in a special elevator.
Followed by 500 cm of acrylic glass tube.
Downwards it goes through a 1500 cm distance.
Good luck on the dangerous track.
There are already some crashed.

A wooden marble run designed as a rafting track.
A work of Ortwin Grüttner
Murmiland 2016

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