Lago Sirino, Natural lake in Nemoli, Basilicata, Italy.
Lago Sirino is a natural lake formed in a karst sinkhole at 788 meters above sea level at the base of Mount Sirino. The water stretches approximately 247 meters long and 165 meters wide, surrounded by steep limestone walls.
This lake is the final remnant of a vast Pleistocene lake that once filled the entire Noce valley. This geological transformation shows how the landscape changed dramatically over millions of years through natural processes.
The lake carries a local legend about farmers who were swallowed by a storm after ignoring a traditional celebration honoring the Madonna of Sirino. This story has shaped how people in the area relate to and respect the water.
The lake is surrounded by a cycling path of about one kilometer, making it easy to walk or ride around the perimeter. Facilities for recreational vehicles and parking are available near the provincial road SS19.
The lake bed contains limestone with flint nodules from the Triassic period and multicolored jaspers from the Jurassic period. This mineral composition makes the lake geologically distinctive and offers insight into the region's ancient past.
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