Mariëndal was a tight and flat bulb land, but now resembles the landscape as it looked in the time when the seawater had free rein. A beautiful, swampy area with low dune tops, water features and the presence of many meadow birds.
Walking tours are regularly organized from sustainability center De Helderse Vallei. A guide from landscape Noord-Holland tells all about the history of this 'old nature'. Lots to see and hear! In the wet nature reserve it is very nice to have boots on.
Tip: bring binoculars.