Anta da Estria — Wikipedia

The Anta da Estria is a megalithic dolmen situated between Belas and Queluz in the Lisbon District of Portugal. Based on datings of human remains, it is believed to date back to the Late Neolithic and early-Chalcolithic eras (4000-2500 BC). The Anta da Estria, the Anta do Monte Abraão and the Anta da Pedra dos Mouros (also known as the Anta do Senhor da Serra) are collectively known as the Antas de Belas, and were first identified in the 1870s by Carlos Ribeiro, who is regarded as the "father" of Portuguese prehistoric archaeology. The dolmen is presently in a much-degraded condition and...