A hypogeum or hypogaeum is an underground temple or tomb.
The entrance of a tomb at the Theban Necropolis—TT 353. The entrance was built by the order of Sen-en-Mut, 97.36m long and 41.93m deep
3D laser scan profile of the Hypogeum of the Volumnus family
Tablinum inside Hypogeum of the Volumni, in the northern end of the crypt
3D image of Tablinum inside Hypogeum of the Volumni, cut from a laser scan
The Hypogeum of Ħal Saflieni is a Neolithic subterranean structure dating to the Saflieni phase in Maltese prehistory, located in Paola, Malta. It is often simply referred to as the Hypogeum, literall
Hypogeum
…is found at the Minoan Bronze Age site of Knossos on Crete. Hogan notes this underground vault was of a beehive shape and cut into the soft rock. The Ħal Saflieni Hypogeum in Paola, Malta, is the oldest example of a prehistoric hypogeum, the earliest phase dating to 3600–3300 BC. It is a complex of underground chambers…
The Hypogeum, photograph by Richard Ellis, before 1910
The Sleeping Lady of Ħal Saflieni, National Museum of Archaeology, Valletta