Katwijk Back to all Nature Trails Zuid-Holland < > Katwijk de Nature Trail Useful info A lovely walk through the Katwijk dunes. Most of the route runs on a shell path and a small part goes through the loose sand, making it not so suitable for prams. PROVINCE: Zuid-Holland start address: Zuidduinseweg 7, Katwijk length: 7 kilometers dog: Allowed disabled people: unsuitable