What is another word for cradle vault?
Pronunciation: [kɹˈe͡ɪdə͡l vˈɒlt] (IPA) 
Cradle vault is a type of ceiling that is arched and shaped like an inverted boat. It is also called barrel vault, tunnel vault, or wagon vault. A barrel vault is a variation of the cradle vault that is semicircular in shape. A tunnel vault is a longer version of the cradle vault that creates an illusion of a tunnel. A wagon vault is a variation of the cradle vault that has a convex curve at its base and straight sides. These types of vaults were commonly used in ancient architecture, such as Roman and Byzantine, and can still be found in modern buildings like cathedrals and museums.
