Glacial erratic of Rottum

The glacial erratic of Rottum is a large boulder resting in the flat Frisian landscape of De Fryske Marren. The rock differs notably from the local geology, making it a distinct and visible feature in the surrounding terrain.

During the last ice age, glaciers from Scandinavia transported this massive stone to the northern Netherlands. When the ice retreated, the boulder remained in place, becoming a permanent landmark in the landscape.

The boulder is called Zwerfsteen van Rottum in Dutch and Swerfstien fan Rottum in Frisian, reflecting how local communities name and relate to natural features. Such stones become reference points in daily life and are part of how people understand their landscape.

The stone is located near the residential area of Rottum and can be reached via local roads. Parking spaces are available close to the site, making it easy to visit.

The rock composition reveals its Scandinavian origin and helps scientists understand ancient glacier movements. By studying such stones, researchers can trace prehistoric ice sheets and learn about northern European geology.

Location: De Fryske Marren

GPS coordinates: 52.93583,5.91528

Latest update: December 14, 2025 13:04