It is a vault or vaulted roof. It is formed by a series of vaults/vaulted arches.
Domes (in English) is the plural of dome In architecture a dome is a (roughly) hemispherical shell, often a roof or a section of a roof.
Vault
A rounded roof built on a circular base is a dome.
VAULT
A dome is a rounded vault made of either curved segments or a shell of revolution. An arch is a curved symmetrical structure spanning an opening and supporting the weight of a bridge, roof or wall above it.
The round arch and barrel valult are similar in shape. The barrel vault is an extension of the round arches which form the vault or roof of a structure.
It's Mitochondria.It is known as the 'storage house' of energy as it fuels our body by forming ATP(Adenosin tri-phosphate)
On top of the roof of the vault to get in there you will have to use the combination which is 8630.
vault
A Vault
vault