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