The Dolmen of Tapadão (or Anta da Aldeia da Mata)  is the second largest in Portugal.

It constitutes a megalithic monument with more than five thousand years old. It stands out for its size and still in very good condition.

Was classified as a National Monument in 1910.

It consists of seven granite struts with identical heights but different shapes, some props are rectangular, others have a very irregular triangular shape, the monument retains the hat comprises a single granite slab.

Is located two kilometers from the village of Aldeia da Mata, in Crato, Portalegre district.