The Cascate del Serio is the tallest waterfall in Italy at 315 metres, and it is only visible for a few hours each week. The water is regulated by a hydroelectric dam upstream, and the valve that releases the water into the natural falls is opened on a fixed schedule. The rest of the time the Serio river flows through a different channel, bypassing the waterfall entirely. This makes the Cascate del Serio not just the tallest waterfall in Italy but also the most elusive.
Italy’s Tallest Waterfall and Its Scheduled Release
At 315 metres in total drop, the Cascate del Serio holds the title of the tallest waterfall in Italy and one of the highest in Europe. The waterfall is actually a three-tiered cascade, with water plunging over a series of rocky ledges in the Valbondione valley of the Bergamo Alps. What makes this waterfall particularly unusual is that its flow is partially controlled by a hydroelectric dam upstream, which means that the full spectacle of the falls is only visible on schedule. The dam releases water through a sluice gate at specific times, transforming the normally modest trickle into a thundering cascade that rivals any natural waterfall in Europe. The release schedule is set by the local authorities and published in advance, typically occurring on Sundays and public holidays from June through September, with additional summer evening releases that create spectacular rainbows in the late afternoon light.
The Scheduled Release: Timing Your Visit
The controlled release of water from the dam above the falls is the key to seeing the Cascate del Serio at its full power. The water is usually released at certain times, often around 10 am and 3 pm, with the exact schedule published each year by the municipality of Valbondione. When the sluice gates open, the water builds from a gentle flow to a full roar over approximately 15 minutes, filling the entire gorge with mist and the deep rumble of falling water. The best viewing point is from the bridge at the base of the falls or from the designated viewing platform at the end of the walking trail. The surrounding cliffs channel the sound in a way that amplifies the experience, making the release feel even more powerful than the 315-metre drop alone would suggest. Checking the official schedule on the Valbondione tourism website before visiting is essential.
The Hike to the Falls and Practical Information
The walk to the Cascate del Serio begins from the village of Valbondione, which sits at an elevation of 900 metres in the upper Seriana Valley. The trail follows the course of the Serio River through a forested valley, crossing several stone bridges and passing by an old mill and the ruins of a medieval ironworks. The hike takes approximately 45 minutes to an hour each way and is of moderate difficulty, with some gentle uphill sections but no technical climbing required. Valbondione is located in the province of Bergamo, about 90 minutes by car from Milan or 45 minutes from Bergamo city. The best time to visit is between June and September, when the release schedule operates and the weather is most reliable. Free parking is available at the trailhead, and the village offers several small restaurants and bars for refreshments after the walk.
The Timed Release
The dam at Lago del Gleno, built in 1929, diverts the Serio river for power generation. Since 1969, the valve that feeds the natural waterfall has been opened on a schedule set by the local tourism board. From June to September, the water flows from 10am to 12pm and from 3pm to 5pm on Sundays and public holidays. In July and August, additional flows are added from 3pm to 5pm on Wednesdays and Saturdays. The schedule changes each year. Check the Val Seriana tourism website before you go. If you arrive on the wrong day, the cliff is dry. The vertical rock face, stained dark by centuries of water, is a memorial to the waterfall that used to flow every day before the dam was built.
The Walk to the Base
The access point is the village of Valbondione, in the Bergamo Alps, at 900 metres elevation. From the village, the trail follows the Serio river upstream through a valley of pastures and larch forest. The walk is 5 km each way and takes about 2 hours at a steady pace. The elevation gain is 350 metres. The final section passes through a narrow gorge with the sound of the waterfall growing louder with every step. The last corner opens onto the amphitheatre where the waterfall drops from the cliff above. There is a bridge at the base of the falls that provides the classic viewpoint. The spray from the 315-metre drop reaches the bridge. On a sunny day the mist carries a full double rainbow.
The Val Seriano and Bergamo Alps
Valbondione is the northernmost village in the Val Seriana, and the valley is one of the least visited in the Bergamo Alps. The hiking infrastructure is excellent. The Rifugio Curò, at 1,900 metres above Valbondione, is a 3-hour walk from the village and serves lunch on a terrace with a view of the dam and the peaks of the Presolana range. The meal costs €15-20 as of 2026 and includes polenta, local cheese, and cured meat. The refuge sleeps 50 and costs €40 per night with breakfast. The silence of the valley after the waterfall stops flowing at 5pm is the silence of a landscape that has not changed in centuries.
Did you make the two-hour walk to the base of Italy’s tallest waterfall, and did the knowledge that the water would stop flowing at exactly 5pm make the time you had there feel more precious?
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