I have lookes through this rides list with photos of Knoebels, but I haven't found a ride like "Lindy Loop"
http://www.themeparksonline.org/tporide.asp?ParkID=90
I have found a picture of an interesting ride that named "Lindy Loop"
http://www.rmmridemodels.com/vintage/pages/Lindy-Loop.htm
I have found out, that was built from Spillmann. Does anybody know if still exist one in a park? Has someone got photos of this type ride?