Overview
- Park rangers reported a landslip north of Kollicker Ort that released about 4,500 cubic metres of Geschiebemergel, a glacial cover of clay, silt, sand, gravel and stones.
- The collapse ran roughly 45 metres along the cliff, left a five‑metre talus at the base and pushed material up to ten metres into the Baltic Sea and about 20 metres uphill.
- Observers say the chalk bedrock remained largely intact this time and the overlying ice‑age cover moved, a difference that points attention to the layered geology rather than pure chalk failure.
- Investigators are examining water movement through sand layers and pooling on impermeable clay as a possible trigger and have urged visitors not to leave the marked high-crest path.
- This event follows a string of large failures on Rügen that have forced heritage removals and increased monitoring, raising concerns about ongoing shoreline retreat and risks to walkers and infrastructure.