The Saflieni phase (3000-2500 BC) of Malta's prehistory[1] was named after the Hypogeum of Ħal-Saflieni. The hypogeum and part of the Ta' Ħaġrat temple complex both date from this period.
This phase evolved from the Ġgantija phase (3600–3200 BC)[1], and led to the Tarxien phase (3150-2500 BC).[2]
The Hypogeum in Paola, Malta, is a subterranean structure thought to have originally been a sanctuary. It became a necropolis in prehistoric times.[3] It is the only prehistoric underground temple in the world and was recognized as a World Heritage Site by UNESCO in 1980.[3]
Amongst various features of importance, a petrosomatoglyph of a human hand[4] and an iconic statuette called the Sleeping Lady[4] have been discovered in the hypogeum.