The bunker was designed with three levels, including a deep subterranean section intended to house barracks and ammunition storage.
The project was abandoned in 1938 before the rotating turret was completed, leaving the bunker without its primary intended offensive armament.
It is part of a larger, incomplete defensive line intended to protect the northern border of Czechoslovakia against Nazi Germany.
The original plans included a ventilation and filtration system designed to protect personnel from potential gas attacks.
The complex features heavy armored doors and embrasures, which are characteristic of the 'Beneš Line' fortifications.
N-D-S 75 was specifically meant to provide artillery support to the wider defensive chain across the Náchod gap.
Dělostřelecký srub N-D-S 75 Zelený is a key component of the Dobrošov Fortress, part of the Czechoslovak border fortification system constructed between 1935 and 1938. The site is a heavy artillery bunker designed to house dual 10cm howitzers in a rotating armored turret, though these were never installed due to the Munich Agreement. The bunker features an extensive underground complex of corridors and storage rooms connected to the neighboring N-D-S 74 Můstek and N-D-S 73 Jeřáb infantry bunkers. It is situated on the ridge above the town of Náchod at an altitude of approximately 600 meters. The facility remains a memorial to pre-WWII defensive engineering and military architecture. Visitors can explore the preserved subterranean sections that highlight the tactical planning of the era. The site is currently managed by the Regional Museum in Náchod.
The exterior armored embrasures and the observation post offering a panoramic view of the Náchod landscape.
Bring a warm jacket, as the underground temperatures remain low and constant regardless of the weather outside.
Wear sturdy, non-slip footwear suitable for uneven, potentially damp concrete surfaces.
Plan to visit the entire Dobrošov complex to understand how the Zelený bunker functioned within the larger network.
Do not attempt to enter the fenced-off or restricted sections of the fortress tunnels without a guide.
Open seasonally from spring through autumn; closed during winter months; often closed on Mondays.
Maintain silence in the subterranean areas; follow guide instructions strictly; do not touch historical metalwork or wall surfaces.
