Schron bojowy dla km. Regelbau C-1 is a military bunker located in western Poland, near the town of Chojna. Built during World War II, this structure follows the German Regelbau C-1 design, which was part of the larger fortification system constructed by Nazi Germany along the Oder River and the Pomeranian Wall.
The bunker was intended to serve as a combat shelter for infantry units, providing protection against artillery and small arms fire. Today, it stands as a historical relic of the region's wartime past, attracting interest from military history enthusiasts and urban explorers.