The Kirana Hills is a small and extensive rocky mountain range located in Sargodha, Pakistan. It is also a place of tourist attraction in Sargodha City. Locally known as “Black Mountains”  due to its brownish landscape, its highest peak is about 980 feet (300 m).

Pakistans first cold test of its nuclear device was carried out on March 11, 1983 in the Kirana Hills near Sargodha, home of the Pakistan Air Forces main airbase and the Central Ammunition Depot (CAD). Cold Test (CT) is a means of testing the working of a nuclear device without an explosion. This is achieved by triggering an actual bomb without the fissile material needed to detonate it. The test was overseen by Dr. Ishfaq Ahmed.

The need to improve and perfect the design of Pakistans first nuclear device required constant testing. As a result, between 1983 and 1990, the Wah Group conducted more than 24 cold tests of the nuclear device at Kirana Hills with the help of mobile diagnostic equipment. These tests were carried out in 24 tunnels measuring 100-150 feet in length which were bored inside the Kirana Hills. Later due to excessive US intelligence and satellite focus on the Kirana Hills site, it was abandoned


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