The Dolmen de Sa Coveccada is a megalithic grave located in the northeast of Sardinia, Italy. It is an ancient funerary structure that dates back to the prehistoric period, specifically to the Neolithic era, around 2700-2500 BC. The dolmen is situated near the town of Calangianus, in the province of Sassari.

The structure of the Dolmen de Sa Coveccada consists of large, upright stone slabs supporting a massive capstone, forming a chamber or tomb-like enclosure. The capstone, which is estimated to weigh around 10 tons, is a noteworthy feature of the dolmen. The impressive stonework and the size of the structure reflect the advanced building techniques and the significance of the site for the prehistoric communities that constructed it.

Like many megalithic structures of its kind, the Dolmen de Sa Coveccada is believed to have served as a burial site for the ancient inhabitants of the region. Archaeological evidence suggests that these types of megalithic graves were used for collective burials, indicating that they held social and ritualistic importance within the communities that built them.