Natur- & Geopark Mëllerdall

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The history of the Natur- & Geopark Mëllerdall begins around 245 million years ago, in a sea. Countless particles of sand and others were deposited and solidified into rock. The sea disappeared, and rivers shaped the impressive rocky landscape of the Natur- & Geopark Mëllerdall we see today.

Located on this outstanding geological heritage, a diverse and valuable natural and cultural heritage came into being. The task of the Natur- & Geopark Mëllerdall is to preserve this heritage and to develop the region sustainably. At all times, the central focus of the actions is the people.

The municipality of Berdorf is located in the middle of the Natur- & Geopark, and numerous businesses in the municipality have been designated as Natur- & Geopark Partners.

You can find more information here: www.naturpark-mellerdall.lu

GEOLOGICAL HIGHLIGHTS IN Berdorf

Geolandscape "Wanterbaach-Siweschlëff"

The area along the nature discovery trail Wanterbaach-Siweschlëff in Berdorf is one of the most impressive landscape parts in the Luxembourg sandstone. A thick sandstone layer lies here on clayey marls. Deep vertical clefts divide the sandstone into high towers. At the edge of the plateau, some of these sandstone towers have detached themselves from the rock walls and have slipped or tilted on the slippery clayey marl layer, resulting in narrow rock passages (Schlëffe). Siweschlëff means "seven gorges" and refers to a rock labyrinth of such crevices: between the rock towers there are seven up to almost 30 centimeters wide and up to 20 meters deep ones. A path leads through the narrow and gloomy crevices. A special cool-humid microclimate could form inside, so that the mosses and ferns, for which the region is known, can thrive here.
After the narrowness of the gorges, the view across the valley of the Black Ernz opens on the upper edge of the plateau. Pines grow on the sandy soils of the plateau, while beech trees grow on the sandy, loamy debris below. The shallower lower slopes are made of marl, a mixture of clay minerals and limestone, and are mostly used as grassland. This shows the dependence of the vegetation on the geological underground.
On an extra designated part of the rock walls you find the only climbing area of the sandstone landscape, which is reserved for members of climbing associations.
The rocks can be explored on the 4.2 km long local circular route B2. The trail is also part of a NaturWanderPark deluxe tour and the Eifel-Ardennes Trail. In addition, the trail is pervaded as nature discovery trail Wanterbaach-Siweschloeff.

General information

Geolandscape "Wanterbaach-Siweschlëff"

Beim Maartbesch
L-6552 Berdorf
T : +352 72 04 57 1
F : +352 72 75 24
E :
W : http://www.mullerthal.lu
See on the map


Rock formation "Huel Lee/Hohllay"

The "Hohllay" (which means "hollow stone“) is a rock hollowed out by man. Already the Romans have gained their stones in this area for their buildings. In the Middle Ages, the mills of the Oeren Monastery (near Trier) were obliged to use only millstones from this quarry.

General information

Rock formation "Huel Lee/Hohllay"

rue d'Echternach
L-6550 Berdorf
T : +352 72 04 57 1
F : +352 72 75 24
E :
W : http://www.mullerthal.lu
See on the map