Anta da Nave do Grou
São João Baptista, Portugal
The Anta do Sobral (also known as the Anta da Nave do Grou), is a megalithic dolmen, or burial chamber, located in the parish of São João Baptista in the municipality of Castelo de Vide in the Portalegre District to the east of Portugal. It is believed to have been constructed in the Late-Neolithic period.
Archaeological site data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).