Quarry Restricted Area Warning Flags

Multiple brightly colored plastic and rusted metal warning markers used to designate restricted areas in the quarry. The flags feature bold red 'RESTRICTED' crosses with white advisory text, while the signs bear red circles bisected by diagonal lines and chipped white paint with faded red lettering. Both serve the same purpose of marking hazardous zones around the blast zone, with the Doctor and Sarah using them for cover during the collapse. The flags get ripped from their posts while some signs are half-buried in scree, but their protective function remains consistent across variations.