The Zambel Waterfall ('el Zambelòn' in the local dialect) is an enchanting natural setting: the stream plunges briskly between high rock walls into a natural pool; the cool, clear water flows into a clearing surrounded by greenery; the sun's rays often penetrate it, creating evocative beams of light and rainbows! It's naturally at its best after rainy days. It's also known as the Calliano Waterfall (name of the nearby town), the Rio Cavallo Waterfall (from the name of the stream and the valley of the same name), or the Rosspach/Rossbach Waterfall (the Cimbrian equivalent of the river): the watercourse was so named because it descended from Folgaria in a very winding and impetuous manner, like a restless colt.
The waterfall is actually an ancient artificial dam, as evidenced by the stone blocks that compose it entirely, without the use of cement. In the 15th century, the left canal (above the greenhouse) was built for agricultural purposes and likely to fill the defensive moat of nearby Castel Pietra. In the 17th century, the right industrial canal ('roggia') was also built, descending to Calliano and flowing into the Adige River. Over the centuries, it has served to provide mechanical power to countless industrial and manufacturing activities (mills, sawmills, hammer mills, spinning mills).
It can be reached from below, via an easy path from Calliano, or from above, via a short route equipped with ropes and steps. In summer, the site is quite popular for cooling off and sunbathing.