Malta's megalithic temples predate Stonehenge by a thousand years and the Egyptian pyramids by five centuries. Built between approximately 3600 and 2500 BCE by a people we know almost nothing about, they are the oldest freestanding stone structures in the world. Then, around 2500 BCE, the temple-building civilisation disappeared — apparently completely, replaced by a different people with entirely different material culture. What happened is unknown.
Malta and its sister island Gozo contain seven UNESCO-listed megalithic temple complexes, each built from massive limestone blocks — some weighing over 20 tonnes — shaped and fitted without metal tools. The temples share a characteristic trefoil or cloverleaf floor plan of semicircular apses arranged around a central corridor, suggesting a common architectural tradition maintained across centuries of construction.
Around 2500 BCE — with brutal abruptness in the archaeological record — the temple-building tradition ended. The people who built the temples disappear from the evidence entirely. No gradual decline, no evidence of warfare or conquest, no continuity into the subsequent Bronze Age culture. A new people with different pottery, different burial customs, and no apparent knowledge of or interest in the temple tradition took their place.
What happened? The most widely accepted explanation is population collapse from a combination of factors — soil exhaustion from intensive agriculture on a small island, climate change, epidemic disease — that made the island unable to support the population that had built and maintained the temples. The temples then sat empty, unused, gradually silting up, until the Bronze Age newcomers arrived to find a landscape of mysterious stone structures whose original purpose they apparently did not know.
The temple people left no writing. Their language is unknown. Their religious beliefs must be inferred entirely from the physical evidence — the fat female figurines found at multiple sites (which may represent a goddess, or priestesses, or simply a cultural aesthetic preference), the astronomical alignments, the elaborate spiral carvings, the careful arrangement of bones in the Hypogeum. They were sophisticated. They were numerous enough to organise monumental construction projects. And they vanished.
The Maltese temples represent one of the great enigmas of Mediterranean prehistory — a sophisticated civilisation that flourished for over a thousand years, built some of the most remarkable structures in the ancient world, and then ceased to exist entirely, leaving almost no trace of who they were.
— David Trump, Malta: Prehistory and TemplesThe Sleeping Lady: Among the most remarkable objects found in the Hypogeum is the Sleeping Lady — a small terracotta figure of a reclining woman, apparently sleeping or in trance, found in a pit. It is one of the most evocative objects of prehistoric art ever discovered. Whether she represents a worshipper, a priestess, a deity, or something else entirely is unknown. She is in the National Museum of Archaeology in Valletta.