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The Strait of Gibraltar is one of the most important strategic points on the planet where the interests of many states come into contact. On this narrow isthmus, the communications of the Suez Cbad and the Bosphorus are linked.
As a result, a 14x5x2.5 meter camera was built in the rock, from where a view of Gibraltar Bay to the west and the Mediterranean Sea to the # 39;. The observation spaces were at the same time ventilated.
The conditions were, so to speak, spartan: a small living room with a volume of 1630 cubic meters, a radio communication room, a water tank of about 45 000 liters, a toilet. The entire floor was covered with a special tile, absorbing the noise. The radio transmitter was powered by two generators – manual and bicycle.