Discover the history and engineering behind the Don-2N, a massive Soviet-era radar facility shaped like a 140-foot concrete pyramid. Hidden in the forests near Moscow, this structure operates as the brain of the A-135 anti-ballistic missile defense system. Learn how Russian engineers utilized active electronically scanned arrays and the Elbrus-2 supercomputer to track microscopic space debris and defend against incoming threats using unparalleled 250-megawatt electromagnetic power.

Source: The Soviet Pyramid Hidden in a Forest… That Can Spot a Tennis Ball 1,000 Miles Away