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Construction began on the project codenamed "Objekat 505" or Object 505 in 1957. It was located near Biha� in Bosnia. This base was intensively used during the war in the 1990s. During withdrawal, the JNA destroyed the airport to prevent future use and the Army of Republika Srpska Krajina finalized its demolition in 1992 with 56 tons of explosives. The ensuing explosion was so powerful that the nearby city of Biha� shook violently.

It was designed to sustain the direct impact of a 20 Kiloton nuclear bomb, equivalent to that dropped at Nagasaki in World War II as the facility had semicircular concrete shields that were arranged every ten meters to amortize the impact. Its construction began in 1957 and finished in 1965. Estimated cost of construction was six billion US dollars.

The air base had access to underground water source, power generators, crew quarters and other facilities which were of strategic advantage in the event of war.

The Facility was under heavy surveillance by the guards who were authorized to open fire on anyone attempting to access the Facility without authorization.

The length of the underground facilities was 3.5 kilometers. The complete object had four entrances, three of which were intended for use by fixed-wing aircraft. The entrances were protected by 100 ton pressurized doors. The Facility also had five runways.

The facility even had a mess hall which had the capacity to feed 1000 men at once. Object 505 had enough food, fuel & arms reserves to 'survive' 30 days without any external intervention.

Fuel to the facility had been supplied with 20 kilometers worth of underground pipes from a military warehouse on Pokoj hill near Biha� city.


Attn PILOT