Tholos do Barro

The Tholos do Barro is a Chalcolithic domed tomb constructed of block masonry, located on Monte da Pena near Barro village in Torres Vedras, Portugal [1]. Dating to 2500–2200 BC, this Megalithic monument represents Copper-Age burial architecture in the Lisbon region [1]. Classified as a National Monument in September 1940 [1]. It stands near a hilltop monument to Our Lady of Fátima, linking prehistoric ritual landscapes with later religious sites [1].