Orrido di Balmasurda

Orrido di Balmasurda is a narrow rock gorge near Premia, in Val d'Ossola (Piedmont), carved over millennia by the Toce River through hard stone. It's one of three so-called "orridi" in the Uriezzo area — alongside Orrido di Santa Lucia and Orrido di Arvera — but Balmasurda is the only one where the Toce still actually flows through the crack, which makes it the liveliest stretch of the whole gorge system.

How do you get to Orrido di Balmasurda?

The usual starting point is Premia, in Valle Antigorio, from where a trail runs through the hamlet of Crego toward Uriezzo, at around 600 meters above sea level. The gorges can also be reached from Baceno or Verampio, but the Premia–Crego approach is generally recommended as the clearest and most scenic. The path doesn't require special equipment — steeper sections have metal walkways and steps, while the rest crosses stable, if rocky, ground.

What will you see along the way?

The main draw is a deep, narrow rock cleft crossed by a suspended footbridge hanging roughly 35 meters above the water — a genuine thrill for anyone who enjoys a bit of exposure. The southern stretch, Orrido Sud, runs about 200 meters long and 20 to 30 meters deep. Nearby, at Maiesso, you'll find the Marmitte dei Giganti ("Giants' Cauldrons") — smooth glacial potholes carved by meltwater and stone, small waterfalls, and emerald pools that stand out sharply against the white rock. Walking the full loop connecting the gorges and the potholes usually takes around two hours at a relaxed pace, photo stops included.

When should you visit, and what should you watch for?

Late spring and summer are the best times, when the Toce's water level is low enough to cross the walkways safely and the vegetation around the gorge is at its greenest. One important note for 2026: in June, the mayor of Premia issued an emergency order closing access to Orrido Sud in the Balmasurda gorge, after a mountain guide spotted a worrying crack in the rock face above the canyon — there's a risk of a rockfall. Before heading out, check the current access status with the Premia municipal office or a local guide, since part of the route may still be closed.

Who is this hike suited for?

Given its moderate length and gentle elevation gain, the walk to the orridi and the giants' cauldrons is generally considered easy and family-friendly, provided the trail is open at the time. Sturdy trekking shoes with good grip are worth packing, since the surface can get damp and slippery near the water, and a camera is essential — the contrast between the bright white rock and the turquoise pools is one of the most photogenic sights in the whole Val d'Ossola.

Frequently asked questions

Is Orrido di Balmasurda currently accessible? Since June 2026, an order has closed part of the gorge (Orrido Sud) for safety reasons after a crack was found in the rock face. Check the current status with local authorities before visiting.

How long does the hike to the orridi and Marmitte dei Giganti take? The full loop from Premia through Crego to Uriezzo and Maiesso usually takes about two hours at a relaxed pace.

Is the trail suitable for children? Yes, when open, it's considered an easy, family-friendly route, though extra care is needed near the water and walkways.

What else is worth seeing besides the gorge itself? Don't miss the Marmitte dei Giganti at Maiesso — glacial potholes with striking emerald-colored pools.