This "Bound" is a kind of an interactive digital rally. You need a smartphone on which you can download the "Actionbound" app for free. The bound "Experience the forest" is then loaded onto the smartphone, so that no internet is required on site.
A pump track is a specially designed circular track for all types of bikes. It consists of wave-like hills, steep curves, and jumps that allow the course to be ridden without pedaling, but through weight shifting and targeted pulling and pushing movements (English: "pumping").