Public Boulder Wall

In the city of Bad Langensalza there is a public bouldering wall in the middle of a park. Not a bad idea, right? The routes in different levels of difficulty are marked by different colors. The ground is covered with bark mulch to cushion the landing in case of a possible slide, which at the same time keeps it low-maintenance and naturally weed-free. There is even a slight overhang! It would be desirable that the routes are periodically changed to keep the wall attractive for a longer period of time.