Sandstone Formation

This sandstone formation has its origin in the bottom of a sea between 250 and 200 million years ago (Triassic and Jurassic). In this region of the Mëllerdall Nature & Geopark you will mainly find sandstone, marl, limestone and dolomite. After the sea disappeared into the Middle Jurassic, today's rivers cut through the rocks, forming the current landscape of plateaus and deep valleys, which have been inhabited by humans since the Stone Age. In particular, the river Sûre, the largest river in the region, cut deep into the subsoil of dolomite, so that the rock is now visible as rock walls on both sides of the valley. But the smaller rivers and streams also created steep cliffs. These contrast with the open areas of the Keuper landscape, gently rolling hills on the high plains.

Pascal Brackman