Between natural river springs and eruptive rocks
Winter hiking • Val di Fassa
Between natural river springs and eruptive rocks
<p>Fontanazzo is the largest hamlet of Mazzin and borders Campitello to the north. It is actually divided into two: Fontanazzo di Sopra and Fontanazzo di Sotto, which hosts the town hall decorated with bas-reliefs depicting typical past activities.</p>
<p>Campitello was born on the alluvial cone of volcanic and sedimentary rock debris from the Dolomites transported by the Duron stream over geological eras. The area is therefore particularly fertile and marshy, and the vegetation is very rich. Up to Fontanazzo, however, you are moving in a territory characterized by eruptive rocks connected to a magmatic event dating back to the Middle Triassic, about 230 million years ago. This is why it is more prone to landslides than elsewhere. By studying these rocks, it has been understood that in the Middle Triassic the earth's crust ruptured, allowing magma to rise that formed at least two submarine volcanoes in Val di Fassa, one in the Marmolada area and one in the Monzoni-Buffaure area. The Dolomites, which emerged from the marine waters, have been fractured and eroded; for this reason, they are fragile but not deformable. The rocks in this area are particularly heavy: each cubic meter weighs about 3 tons!</p>