You are the yellow marble on the rafting track.\r<br>From the entrance it goes 200 cm upwards in a special elevator.\r<br>Followed by 500 cm of acrylic glass tube.\r<br>Downwards it goes through a 1500 cm distance.\r<br>Good luck on the dangerous track.\r<br>There are already some crashed. \r<br>\r<br>A wooden marble run designed as a rafting track.\r<br>A work of Ortwin Grüttner \r<br>Murmiland 2016
