The area is of outstanding importance for the population of meadow-breeding birds that have disappeared from most places in the modern agricultural landscape due to lack of flowers and thus insects. These include the Whinchat, whose population in the Burbach area is one of the largest in the whole of North Rhine-Westphalia. It shares the habitat with the equally endangered Meadow Pipit and Corncrake, which are also characteristic species of open landscapes.
In the Wetterbach Valley, such rare flowering shrubs as Globeflower, Monkshood and Betony flourish. The wealth of colourful flowers attracts rare butterflies like the Scarce Copper, the Small Pearl-bordered Fritillary and the Dusky Large Blue.
Sometimes you may even can see Black Storks or Red Kites circling over the valley. They nest in the surrounding forests, but find ample supplies of food in the stream valley.
The theme trail "Literatur in der Natur - Romantischer Hickengrund" combines literature interest with an enjoyable hike.
The nationally-known Rothaarsteig trail passes to the west of Holzhausen. It links up with smaller circular trails, the so-called Rothaarsteig branch-trails Rothaarsteig-Spuren, one of which is the "Trödelstein-Pfad" near Burbach-Lippe.
One of the activities of the local heritage society Heimatverein Holzhausen is to hold cultural and natural history events.
Address for satnavs: Flammer Straße 22-24, 57299 Burbach-Holzhausen
GPS (UTM): 32 U 439591, 5620998
Google coordinates: 50.73763, 8.143905