Hegra Fortress, Mountain fortress in Stjørdal Municipality, Norway.
The fortress contains 300 meters of underground tunnels carved into Ingstadkleiva mountain, featuring parallel passages connected by a 35-meter cross tunnel.
Built between 1908 and 1910 after Norway's separation from Sweden, the fortress served as a border defense installation until budget cuts in 1926.
The Norwegian Red Cross operated the fortress as a summer camp for children from 1934 to 1939, before its return to military service.
The military museum displays exhibitions about the fortress history, particularly focusing on the 1940 German siege, and includes a café for visitors.
During the 1940 Norwegian Campaign, 250 defenders at Hegra Fortress held off German forces for three weeks, inflicting over 200 enemy casualties.
Location: Stjørdal Municipality
Inception: 1908
Website: https://forsvarsbygg.no/festningene/finn-din-festning/hegra-festning
GPS coordinates: 63.45083,11.16250
Latest update: May 14, 2025 12:08
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