This Dutch video says about itself (translated):
Snapshot Hoge Veluwe
May 28, 2018
Scattered through De Hoge Veluwe National Park are dozens of wildlife cameras that continuously take photos of the wildlife that passes by. These photographs are important for research into, for example, the behaviour, spread and numbers of animals in the Park. Together the cameras produce more than one million photos per year. We can use your help well by finding out what is on the pictures. For more information go here.