A field of morainic (see moraine) ridges that lie at right angles to the direction of a former ice advance. Individual ridges may vary between 10 and 30 m in height, may be more than 1km in length, and may be 100–300 m apart. They are often linked by cross-ribs. This landscape probably formed beneath a glacier, but the details of its origin are uncertain. It is named for its fine development around Lake Rogen, Sweden.
Subjects: Ecology and Conservation — Earth Sciences and Geography.