At Lisboa Secreta we continue to search for the most unusual stories and places, even outside the capital, in order to uncover the many mysteries that Portugal has in store for us. This time, we’re taking you to discover the Pedras Parideiras.
In the heart of the Arouca Geopark, classified as a UNESCO World Geopark, this is a rare phenomenon that can be visited in the village of Castanheira, in the Serra da Freita, in the municipality of Arouca, about three hours’ drive from Lisbon.
What are the Pedras Parideiras, anyway?
The name leaves no room for doubt. In their essence and most simplistic form, they are literally stones that “stop” other stones. However, of course, the explanation for this natural phenomenon is far more complex than that.
They are actually a granite rock that contains dark-colored nodules. Over time, due to the natural action of wear and erosion of the rocks, the nodules become detached from the granite form, which is why they have been given this curious name by the locals,” explains the official Arouca Geopark website.
How can I find out more about this phenomenon?
Due to the international importance of this geosite, the Casa das Pedras Parideiras – Interpretation Center was built in 2012 to help people not only understand this phenomenon better, but also to call for its conservation.
In this context, various tourist and educational activities are promoted from time to time. At the same time, the building includes a 30-seat auditorium where visitors can immerse themselves more deeply in this geological treasure.
To top it all off, you can walk along a walkway around the granite outcrop. This way, you can get a better look at this wonder of nature. But remember, the Pedras Parideiras are protected, so if you want to take home a souvenir, take lots of photos!
Editor’s note: article being updated