Emergency Planning Underground Bunker, Mackintosh Road, Inverness

1941, modernised 1988-1991. 2-storey sunken rectangular-plan concrete bunker, earthen mound at ground level.

SE (MAIN) ELVATION: modern rectangular concrete entrance block, set into mound to left. Flight of short steps to sunken original entrance, set into mound to right. Large modern lattice communications tower to centre. 3 concrete ventilation towers running over crest of mound to far right.

INTERIOR: upper level: access gained through modern concrete entrance block; steps leading down to decontamination area, large metal blast door. Main upper corridor running around 2 1/2 sides of bunker; Conference and Briefing Suite with five rooms running around. Ventilation Plant Room with workshop to E; modern ventilation system, 1988, including two racing bicycles mounted on concrete plinths, front wheels removed, back wheels connected to belt drive (incase of a power failure these would be used to keep the air circulating). Rear of Ventilation Plant Room two steps lead up to small Filter Room, leading from this two metal blast doors with short flight of stairs to original entrance, now used as exit, 2002. Lower level: flights of stairs to E and W leading from upper level to lower, main lower corridor running around 2 1/2 sides of bunker, rooms leading off including; Central Control Room, Radio Room; acoustic booths along each wall including Communications Centre, small Telephone Exchange. The Generator Room consists of 2 Perkins diesel generators served by a mains tank on the surface. The Generator and Tank Room to far E of bunker accessed through 2 gas tight doors, Shower Room between Generator Room and main corridor. To W of Control Room, Kitchen and Canteen.