Kikkervalleien open day
Once a year, visitors are welcome in the Kikkervalleien ('frog vales') in the Meijendel dunes in Hollandse Duinen National Park. This area is normally off-limits to allow nature to develop undisturbed. The exception is the last Sunday in June, when everyone is welcome to visit. During this day, you can take in the pristine and dynamic landscape of the damp hollows. Ecologists and biologists will be on hand to explain all of the beauty. Treat your eyes and ears and enjoy.