Martin M. Miles' photos with the keyword: Pata do Cavalo

The dolmen / anta Pata do Cavalo ("horse hoof") is a megalithic site from the Copper Age, located between the prehistoric copper ore mines "Mina de Canal Caveira" in the north and "Mina do Lousal" in the south., The local population may have mined ore and some minerals as early as the 3rd millennium BC. The roughly round chamber has a diameter of 5.0 to 5.3 metres. The chamber contains smaller stone slabs from the collapsed dome.