After being scared the first three rides they finally seem to like it better .
Equipment: Just the clothes you wear will do.
But in case you got a weak stomach and just had a patatje (fries) perhaps a plastic bag might come in handy .. in case you gotta puke.
Groningen is part of the Pieterpad hiking trail going from the North to the South in The Netherlands. On several locations Pieterpad-trees are planted.