Tips
Luigi D'Imperio
July 19, 2026
This tunnel was once part of Bolærne Fort’s underground defence system, connecting gun positions, shelters and operational facilities within the island.
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Nearby routes
Best routes near Old Tunnel
5.0
(3)
15
hikers
3.71km
00:58
30m
30m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
Easy
Details
Informations
Elevation 10 m
Weather
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Wednesday 19 August
19°C
12°C
18 %
Additional weather tips
Max wind speed: 21.0 km/h