Tunneldalsstierne are walking and cycling trails through the tunnel-valley landscape around Haderslev. The routes trace a landscape shaped by ice, water, lakes, and wooded slopes, giving the town a surprisingly rich natural setting close to its streets.
They are best for travelers who want an easy outdoor day rather than a single monument. Pick a manageable section, bring weatherproof shoes, and use the trails to see how southern Jutland's gentle scenery was carved by much older forces.