SCP-5000, mysterious door, secure facility, keypad entry, glowing red light, heavy metal door, rust texture, warning signs, containment breach, emergency lights, flickering, shadowy corridor, concrete walls, steel reinforcement, ominous atmosphere, surveillance cameras, dim lighting, wide-angle shot, high contrast, cold color palette, sci-fi elements, futuristic design, engraved symbols, numeric code panel, restricted access, caution tape, hazard stripes, lockdown procedure, silent alarm, eerie silence, claustrophobic space, industrial setting.