Pendant vault
A pendant vault is a rare form of vault used in late Gothic architecture in which large decorative pendants hang from the vault at a distance from the walls. In some cases, the pendants are a large form of boss.
...
Wikipedia
A pendant vault is a rare form of vault used in late Gothic architecture in which large decorative pendants hang from the vault at a distance from the walls. In some cases, the pendants are a large form of boss.