For inspiration on different internship and thesis possibilities, check the following site.
Water Resources Management group and Soil Physics and Land Management group are the most important chair groups to select here.
Furthermore, you can check the map down below. If you are a student who already did their internship or thesis, please fill in the google form on the right side.
TIP: zoom in on the Netherlands, as there are multiple pins located in and around Wageningen that you can check out.