. "wagon roofs" . "waggon roofs" . . "tunnel vault" . . . "waggon" . "barrel" . "vaults" . "wagon roof" . . "vault is barrel" . . "barrel ceiling" . "waggon roof" . "Barrel vault" . "barrel-vault" . "pointed barrel vault" . "arch barrel" . "annular vault" . "barrel-vaulted" . "barrel-vaulted roof" . "Wagon roofs" . "semi-cylindrical vault" . "barrel vaulting" . "wagon-vaulted timber roof" . "barrel-vaulted ceiling" . . "barrel vaulted" . "open wagon roof" . "barrel-chamber" . "wagon-vaulted" . "barrel-vault ceiling" . "barrel-roofed" . "vaulted ceiling" . "tunnel-vaulted ceiling" . "barrel vaults" . "wagon vaulted" . "wagon vault ceiling" . "cross barrel vaulting" . "vaulted roof" . "vault" . "vaulted" . . . "Barrel vault" . "tunnel vaults" . "barrel vault" . "wagon vault" . "tunnel-vaulted" . . . "tunnel vaulted" .