She unlocks an iron portcullis and we step into a humid but spine-chilling cavern.
From the online.wsj.com
The quasi-official emblem of the Houses of Parliament is a crowned portcullis.
From the en.wikipedia.org
The original door from the forebuilding into the keep was protected by a portcullis.
From the en.wikipedia.org
Opposing the entrance was a second portcullis that led to the rear compound.
From the en.wikipedia.org
Doors, metal gates or portcullis in the opening can be used to control entry or exit.
From the en.wikipedia.org
I certainly think the portcullis would be better than either the flag or the royal arms.
From the en.wikipedia.org
Defense highlights include walls made of massive logs and a portcullis.
From the bostonherald.com
A portcullis is suspended above it and a pair of crenellated stone towers stand on either side.
From the guardian.co.uk
The portcullis was originally the badge of various English noble families from the 14th century.
From the en.wikipedia.org
More examples
Gate consisting of an iron or wooden grating that hangs in the entry to a castle or fortified town; can be lowered to prevent passage
A portcullis (from the French "porte coulissante" or gliding door) is a latticed grille or gate made of wood, metal or a combination of the two. Portcullises fortified the entrances to many medieval castles, acting as a last line of defence during time of attack or siege. ...
A gate in the form of a grating which is lowered into place at the entrance to a castle, fort, etc
A heavy timbered grill that can be raised or lowered at the gate of a castle
A heavy wooden or metal gate that closed an entrance to a castle. Portcullises were generally controlled from an interior room on the gatehouse, raising and lowering it as required.
A sliding timber or iron grate which was suspended over a gateway and which was raised or lowered in vertical channels to close the entrance.
A metal grille that could be let down to block the gateway of a castle.
A metal or iron-bound wooden grating that slides down in slots in front of a gateway.
A heavy timber and iron grille suspended in special grooves in a gate house, in front of a gate, that could be dropped to block the gateway. The Hemyock gatehouse has a portcullis slot.