Artificial Caves of Casal do Pardo

Four Neolithic rock-cut hypogea in Palmela, 25 km south of Lisbon, carved from soft Miocene limestone around 3000 BC and reused until c. 2000 BC. The first such tombs discovered in Portugal, they were found during limestone quarrying and classified as a National Monument in 1934. Each tomb features a corridor, antechamber, and hemispherical chamber with a circular skylight for lowering corpses when passages filled. Excavations yielded microliths, polished stone tools, limestone idols, gold jewelry, and Bell Beaker ceramics.