In the island town of Sant’Antioco, connected to southwestern Sardinia by an artificial causeway, lies one of the largest Phoenician-Punic necropolises in the Western Mediterranean. The most remarkable aspect of this archaeological site is that hundreds of underground tombs were carved directly into hard volcanic rock starting in the 6th century BCE. Over centuries, through Roman and medieval times, these underground chambers were repurposed by local families as subterranean homes, stables, and shelters known as “grutti”. This long human reuse turned the site into a unique historic layering where funerary heritage integrated with daily life.