Cascata Dell'infernaccio

Cascata dell'Infernaccio is a hidden waterfall in the Province of Viterbo, set deep inside one of the most dramatic gorges in the entire Lazio region.\n\n## What Will You See?\n\nThe Rigo stream, a tributary of the Tiber, drops roughly 15 meters over rust-stained rocks. The characteristic red-brown color comes from iron compounds leaching naturally from the gorge walls into the water. The cascade flows through a narrow canyon between the villages of Celleno and Grotte di Santo Stefano. This striking combination of color and geology earned it the nickname La Perla dell'Infernaccio – the Pearl of Infernaccio. The gorge is so deep and narrow that sunlight reaches the bottom for only a few hours each day, giving the whole scene a wild, untamed atmosphere.\n\n## How to Get There?\n\nThere are no official signs marking the way to the waterfall – that is part of what makes it feel so remote. From Viterbo, take the Teverina road toward Attigliano and turn right just before the hamlet of Milla. After several hundred meters, pass a dog shelter and follow a rough, deteriorated track downhill. Park without blocking farm access, then cross the field toward the tree line. From there, a steep descent leads into the gorge. The paths are narrow, sharply inclined, and in places run directly above the river, so solid grip and concentration are essential. The descent is not suitable for anyone without basic trekking experience.\n\n## When to Visit?\n\nSpring is the best season – snowmelt and spring rainfall swell the Rigo stream and make the waterfall most impressive. Autumn after heavy rain is the second-best window. In summer the flow drops noticeably and the spectacle is less dramatic. Natural shade fills the gorge year-round, but wet rocks and damp paths call for sturdy, non-slip footwear in every season.\n\n## Frequently Asked Questions\n\nIs there an entrance fee?\nNo. Access to Cascata dell'Infernaccio is free of charge.\n\nIs it suitable for families with children?\nThe descent is steep, unsigned, and physically demanding. It is not recommended for young children or people with limited mobility.\n\nWhy is the water reddish?\nIron compounds leach naturally from the gorge walls into the Rigo stream, giving both the water and the surrounding rocks their rust-red color.\n\nCan I visit year-round?\nYes, but the waterfall is at its most dramatic in spring and after heavy rainfall, when the stream runs at full capacity.