Step into the Park of the Breggia Gorge and you step back 80 million years. Here in the Mendrisiotto region, the patient work of the river Breggia has carved through ancient rock to reveal an extraordinary geological profile spanning from the Jurassic to the Tertiary period. Within these layered stone walls lie fossils of long-vanished seas, traces of underwater landslides, and evidence of climatic upheavals that occurred aeons before humankind walked the Earth. It is a living textbook written in rock -- and a surprisingly beautiful walk through a lush river valley.
Itinerary: Breggia Gorge (4h, see map)
Switzerland's first GeoPark stretches across the communes of Balerna, Castel San Pietro, Morbio Inferiore, and Morbio Superiore. Rich in both natural wonders and traces of human industry, the gorge rewards curious visitors regardless of their geological background.
The old Ghitello mill of 1606, located behind the parking lot of the Breggia Shopping Centre in Balerna, serves as one of the departure points. From here the trail winds past a tranquil lake and follows the river through a landscape where nature and industry intertwine -- remnants of a cement factory and a brewery dot the way. After crossing the Breggia, the path climbs to the San Pietro hill, where the ruins of a medieval castle stand alongside the Chiesa Rossa (Red Church), a 14th-century gem adorned with beautiful frescoes (visits can be arranged).
Following the marked trail, you descend to the bridge Punt da Canaa. Along the way, clearly stratified rocks come into view -- the park's most ancient formations, flint limestone dating back 190 million years. A recently built bridge carries you across a deep and narrow gorge to the right bank, where layers of rock continue to unfold on either side. The trail passes through singular biotopes before looping back to the Ghitello mill, where more recent Tertiary and Quaternary deposits are visible.
Upon request, the Park organizes guided tours and educational activities tailored for schools, while in summer the local tourist office offers guided tours open to the public.
The Cement course
Available only as a guided tour, this alternative itinerary explores the most visible element of the former Saceba cement factory's redevelopment, located at the entrance of the Breggia Gorge. During its peak production years of 1972-1973, Saceba produced up to 200,000 tons of cement annually, totalling over 2 million tons across roughly 20 years of operation.
The educational tour uses the factory's original structures to illustrate the transformation of rock into cement. The 2 km trail leads from open-air quarries through extraction tunnels to the mill where rock was ground, and finally to the imposing oven towers -- once the beating heart of the factory, now repurposed as exhibition and educational spaces.
Temperatures in the tunnels hover around 10-13 degrees with humidity above 80%, so dress warmly and in layers. Helmets, headlamps, and reflective jackets are provided on site. The walk is easy, though it is not recommended for those with cardiovascular conditions, diabetes, claustrophobia, epilepsy, or other serious health concerns.
