of Hal Saflieni is in the Neolithic
period , 3800 to 2500 BC on Malta unused subterranean temple. It
is since 1980 a UNESCO World Heritage site and has been recognized in
the National Inventory of Cultural Property of the Maltese Islands was
Hypogeum or hypogaeum (plural hypogea)
literally means "underground", from Greek hypo (under) and gaia
(earth). It usually refers to an underground temple or tomb.
When Christian underground