ivan992 · CC BY-SA 3.0Cerro Perõ (abanicos aluviales antiguos)
A lookout inside the city of Paraguarí made of chaotic rock: blocks dragged down by mud and water flows millions of years ago.
What it is
Cerro Perõ exposes fanglomerates, that is, ancient alluvial fan deposits: jumbled sediments that came down from nearby relief during violent floods. That disordered mix contains fragments of alkaline igneous rocks of the Sapucaí Province, Ordovician sandstones and conglomerates of the Caacupé Group, and rocks of the Caapucú Suite. In other words, the hill holds, like an archive, pieces of everything that surrounded it when it was laid down.
According to the UNA study, it is one of the best sites for teaching in the proposed geopark area: it is in the middle of town, easy to reach and safe. At 187 m it offers open views over Paraguarí and the road toward Piribebuy.
How to visit
It is inside the city of Paraguarí, so it works as a short stop; ask at the municipality how to reach the lookout.
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Researched and reviewed in September 2026 with 2 sources. A second reviewer checked dates, coordinates and lodging. Hours and prices may change.