During the Spanish Civil War (1936-1939) underground facilities were built in many Spanish cities.
In some cases, these constructions were made as shelters for the civilian population against bombardments (by both sides). Other constructions had a military purpose, as is the case of the Jaca Position, built under the Garden of El Capricho, in the Alameda de Osuna, located in the northeast of Madrid.
This bunker began to be built in May 1937, using bricks and concrete to carry it out, and being designed to be watertight, against possible attacks with chemical weapons. The bunker was built in secret due to its purpose: to be the command center of General Miaja, president of the Madrid Defense Board and Chief of the Army of the Center of the Republican side. Situated 15 meters underground, the Jaca Position had an area of 2,000 square meters, and had four entrances: three to the gardens and an escape gallery that opened onto the street.
Previously, General Miaja had had his command center in the basement of the Ministry of Finance, in the Royal Customs House. The new bunker not only served as a command center, but also as a residence for General Miaja until 1938. Later, it was used by Colonel Segismundo Casado.
According to the Diario de Madrid a few years ago, the bunker was equipped with "a water tank fed by one of the water pipes of the garden; a septic tank with evacuation pipe; a ventilation system through electric pumps; a power generator powered by diesel, and facilities for 200 people".
Today, the bunker is open to the public, through guided tours for groups of up to 20 people and with prior reservation. You can find more information about the visits by clicking here. If you want to visit him without leaving home, a few days ago Ángel Gómez Gómez posted a video touring this position:
Main photo: Diario de Madrid.
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