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De KlimVallei

Den Helder

Swing like Tarzan through the trees in this challenging climbing forest in Mariëndal

Take a look

Ready for some outdoor action? KlimVallei is located in the heart of the green Mariëndal recreation area. Here you can climb from tree to tree, high above the ground. The course is exciting and safe, for all ages.

Four courses, endless fun

The lowest course starts at 4 meters, the highest at 8 meters. You choose your level: from easy to truly challenging. The entire climbing adventure takes about two hours. Perfect for those who love adventure and staying active.

More than just climbing

There's much more to discover around De KlimVallei. There's a petting zoo, an open-air theater, a lookout tower, a forest campsite, and a mountain biking trail. You're close to the dunes and the beach. Feel free to make a whole day of it.

Easily accessible and naturally designed

The climbing forest was built with respect for nature. Everything is sustainable and fits into the landscape. It's a short walk from the visitor center. Reservations are recommended, especially during holidays.


  • Every monday open
    from 10:00 to 18:00
  • Every tuesday open
    from 10:00 to 18:00
  • Every wednesday open
    from 10:00 to 18:00
  • Every thursday open
    from 10:00 to 18:00
  • Every friday open
    from 10:00 to 18:00
  • Every saturday open
    from 10:00 to 18:00
  • Every sunday open
    from 10:00 to 18:00
  • Explanation: Holidays: every day from 10.00 am to 18.00 pm

    Before and after season:
    Wednesday - Friday 12.00 to 18.00 pm.
    Saturday - Sunday from 10.00 am to 18.00 pm.
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