The Negrita megalithic complex is located in the parish of Santo Aleixo da Restauração and consists of two funerary monuments: the Dolmen of Sítio das Antas and the Dolmen of Pedras Tanchadas. Both feature schist upright stones forming the burial chambers.
Classified as a Property of Public Interest on July 17, 1970 (Dec. nº 29/70), these monuments are part of the widespread European megalithic phenomenon, dating from the 5th millennium BCE to the mid-2nd millennium BCE, spanning the Middle Neolithic to the Bronze Age.
Dolmen of Sítio das Antas: Features an oval chamber preceded by a long sub-rectangular corridor oriented east. Upright stones define the chamber, with the largest measuring 2.44 × 1.60 m. Some stones have fallen, possibly along with remnants of the original covering. Small partially buried stones mark the corridor.
Dolmen of Pedras Tanchadas: Also has an oval chamber defined by five smaller upright stones, with an eastern entrance but no visible corridor.