The Carthaginians who settled Cagliari -- known to them as Karalis -- chose Tuvixeddu as their city of the dead, carving tomb after tomb into the limestone hillside. The necropolis grew to enormous proportions, reflecting the size and importance of the Punic community in southern Sardinia. Grave goods found in the tombs -- pottery, jewelry, amulets -- document the material culture and beliefs of people who lived in the orbit of Carthage but on the far side of the Mediterranean. Some tomb walls bear painted decorations, including the Tomb of the Uraeus, adorned with the image of a sacred cobra associated with Egyptian and Phoenician religious traditions. The presence of this symbol in a Sardinian burial speaks to the vast cultural networks that connected the ancient Mediterranean world.

What makes Tuvixeddu remarkable is not just its ancient scale but how relentlessly the living have reused it. One large cavity near Via Vittorio Veneto, located beneath a modern high school building, was used by the Carthaginians as a water reservoir. The Romans continued this practice after they conquered Sardinia in 238 BC. During the Allied bombing of Cagliari in 1943, the ancient tombs and cavities offered shelter to terrified civilians seeking refuge from the explosions above. After the war ended, the homeless moved in, inhabiting Punic burial chambers as dwellings -- the ancient dead sharing their carved limestone rooms with the modern displaced. Each repurposing stripped away some of the archaeological record but added another layer of human story to the hill.

Tuvixeddu sits inside a living city, and that proximity has been both its protection and its threat. For decades, the hillside was hidden behind dilapidated apartment blocks that concealed the ancient cavities from public view. When these buildings were demolished for road construction, the extent of the necropolis became visible again -- but so did the damage that centuries of construction, quarrying, and neglect had inflicted. The tension between urban development and archaeological preservation continues. Parts of the site have been excavated and opened to the public, revealing the vertical tomb shafts, painted chambers, and grave goods that document Cagliari's Punic past. But much remains buried, unexcavated, or threatened by the expanding city that grew up around it without fully understanding what lay beneath.

Tuvixeddu forces a recalibration of how we think about Cagliari. This is not simply an Italian city with some old buildings -- it is a place where Carthaginian civilization planted deep roots, where the cultural connections to North Africa and the eastern Mediterranean were as strong as those to the Italian mainland. The necropolis dates the Punic presence in Cagliari to at least the 6th century BC, predating Roman control by three centuries. The Romans added their own burials to the hill, including the Grotta della Vipera, an elaborate Roman tomb, layering Latin culture over Punic just as the modern city has layered concrete over limestone. From the air, Tuvixeddu appears as a surprisingly green hill in the urban fabric of Cagliari -- an island of open ground that owes its survival not to planning but to the simple fact that its honeycomb of ancient tombs made it a poor foundation for modern buildings.