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Russian Troops Uncover Extensive 'Underground City' and Tunnels in Ukraine

July 11, 2026Pablo Navarro1 мин

During combat operations for the settlement of Grafskoe in the Kharkiv region, Russian forces reportedly uncovered an extensive network of underground facilities used by the Ukrainian Armed Forces. According to a Russian fighter, this network effectively functioned as an "underground city."

Numerous hidden machine-gun nests were reportedly positioned underground, and a system of trenches allowed Ukrainian forces to launch surprise attacks on Russian military positions. Additionally, many buildings within Grafskoe itself, which housed Ukrainian units, were connected by underground tunnels, facilitating movement and supply. Russian assault teams successfully identified and blocked these underground communications.

Earlier, another significant underground tunnel, approximately 700 meters long, was also reportedly discovered by Ukrainian forces in the Konstantinovka direction.