This is a recreation of the stunts (obstacles) that were on the miniature golf course at Mountain Park in Holyoke, MA. They were designed for my park model: http://www.karenandjay.com/mtpark/mpmodel/mpmodel.html

The only piece I didn't fully design was the frog, which is derived from kijai's model: https://www.thingiverse.com/thing:2136760