The giants’ grave of Su Monte de s’Ape is located southwest of Olbia Airport – Costa Smeralda in the province of Sassari in Gallura in Sardinia. The buildings called “Tumbas de los zigantes” in Sardu are the largest pre-nuragic cult structures in Sardinia and are among the latest megalithic structures in Europe. The 321 known giant tombs are monuments of the Bronze Age Bonnanaro culture (2,200–1,600 BCE), which is a precursor to the Nuragic culture.