Plizio Visual Lab
Alssund Bakke
The relief around the Alssund in southern Jutland is a historically significant moraine landscape divided by the strait between the island of Als and the mainland. The area is characterized by rolling hills formed from the terminal moraines of the last Ice Age. A particularly prominent feature is Dybbøl Banke west of the strait, a strategic elevation that was the site of the decisive battle of 1864. The terrain slopes down towards the sound, resulting in a varied coastline with small bays and occasional bluffs. Geologically, the relief consists of glacial till, providing the foundation for the fertile agriculture found on Als. The hills reach heights of up to 40 meters, offering panoramic views across Flensburg Fjord and the Alssund itself. In the town of Sønderborg, the topography shapes the urban layout, with the castle situated on a slight elevation directly by the water. The vegetation is dominated by beech forests that often reach the very edge of the Alssund. This relief stands as a major testament to Scandinavian glacial geomorphology and Danish national history.
- Location: Denmark
- Top sights: Sandbjerg Gods · Troldhøj · Høghøj
- Nearby: Soenderborg (5 km)
Best time to visit & climate
The most pleasant time to visit is Jun–Aug.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg °C | 1 | 1 | 3 | 7 | 12 | 15 | 18 | 18 | 15 | 10 | 6 | 3 |
| Rain mm | 63 | 51 | 46 | 36 | 50 | 69 | 76 | 82 | 60 | 69 | 63 | 65 |
📋 Practical info
Geography
Facts
- Dybbøl Banke is one of Denmark's most historically significant elevations.
- The Alssund is a glacial meltwater valley separating the island of Als from the mainland.
- The hills in the Sønderborg area reach an elevation of approximately 40 meters.
- The relief was shaped by the Baltic ice stream during the Weichselian glaciation.
- The soils consist of heavy and fertile glacial moraine clay.
- The Alssund reaches a maximum water depth of about 15 meters at its deepest point.
Explore nearby
Notable places around
Route planner — Car & Motorhome
Where do you start? We build the route here, with stops and country notes along the way.
© OpenStreetMap contributors · OpenRouteService
Sights in the town Alssund Bakke (6)
Nydam Mose
Archaeological site, where the Nydam Boat and other bog finds were discovered.
Fiskebækgård
Ruins in the region, remains of a historic building.
Støvlen
Viewpoint with platform and toilet facilities, built from a scout camp project in 2017.
Sights nearby
Frequently asked questions
Where is Alssund Bakke?
What is Dybbøl?
What is the view from Dybbøl Banke?
What is Sønderborg Castle?
Is the area good for cyclists?
Alssund Bakke: where is it located?
Alssund Bakke: what is there to see?
Alssund Bakke: when is the best time to visit?
Alssund Bakke: why is it worth visiting?



















