Catacombs are underground galleries used for burials.
They're called "catacombs".
A tomb, catacomb, crypt, tumulus.
CATHORANTIC
Catacombs
Catacombs???
They were called the catacombs. They were the cemeteries of the Romans who converted to Christianity.
They hid in what is called the 'catacombs', which are underground burial places.
underground burial
An underground tomb or burial place beginning with cat is catacomb/s.
Assuming the burial is underground, then it is called an interment, or the body gets interred. The overall "ceremony" or rite is called a funeral.
In a church, a crypt is a room or chamber beneath the main floor of the church that is used for burials or as a burial place for important figures in the church's history. It is a solemn and sacred space for remembering and honoring the deceased.
after the Pharaoh's burial
they are the gallery
Grand Gallery
a burial chamber underground, usually in a graveyard or church.
The National Gallery.