Biedenkopf and Buchenau are not only connected by the Lahnwanderweg trail but also by the tradition of the Grenzgänger. It is an ancient custom that is revived here every seven years.
The Grenzgänger of the town Biedenkopf will walk in a precession right around the town´s perimeter and make a real ball of it. The dates that can be found on the Vesperplatz "Lippershardt" east of Biedenkopf provide proof to this custom that has its origins in the Germanic tribes' border patrols. The custom was continued in the Middle Ages, when the border was not yet marked by cadasters and stones. This stage will not follow the Grenzgänger way all the time but will touch it again and again.
Since this stage is not very long, there will be enough time in the morning to visit Biedenkopf castle and the old town of Biedenkopf.
The stage starts at the level crossing, very close to Biedenkopf railway station. You will find a signpost here, that guides your hike out of the village along the back of the station. Via the road "im Frauental" you now follow the marking to the forestry office. From here go uphill to the Frauenberg. Then after a strict right-hand turn, you hike right above the cemetery, always parallel to the Lahnhöhen Extratour, until you reach the refuge at the Vesperplatz "Lippershardt". Here you can learn a lot about the tradition of the Grenzgänger custom. Along the edge of the forest you continue to the hikers‘ car park.
The area at the Rahmbusch (441 m) is a flora-fauna conservation habitat and offers a lot of peace and quiet. Walking uphill through the forest, you will now reach the Landgrafenbuche. The huge natural monument is situated at a much-branched crossing with all kinds of directional signs. The old, historical signpost proves the long hiking tradition that exists in this region. At the Landgrafenbuche follow the marking and go down to the right. Soon, you will reach the smallest district of Biedenkopf that only has 30 inhabitants: the tiny hamlet of Katzenbach. It is quite a romantic spot on earth but even has the possibility to stop for refreshments and overnight stays.
Now, take the local road for a short while, before the Lahnwanderweg trail turns right and subsequently leads downhill into the Katzenbachtal. Taking the bridge and crossing the idyllic Katzenbach, you follow the brook rightwards for a short distance. You will leave the brook by keeping to the markings to the left and a short ascent will begin. At the crossing "Wolfsgeschirr" you will learn about a deadly mission from the year 1747 back when the last wolf in this region was killed right at this place. Soon the first houses of Buchenau can be seen. On a meadow path, pretty close along the Lahn, you finally reach today's stage destination: the Lahnbrücke (Lahn bridge) in Buchenau.