Akerneset Landslide & Geiranger Tsunami Risk — Should Cruise Passengers Worry?
The unstable Akerneset mountain above Geirangerfjord could trigger a massive tsunami. Here
Frequently Asked Questions
Is it safe to cruise to Geiranger with the Akerneset landslide risk?
Yes. Norway
What is the Akerneset landslide?
Akerneset is an unstable rock slope on the western side of Geirangerfjord in Norway. An estimated 54 million cubic metres of rock is slowly sliding toward the fjord. If the entire mass were to collapse at once, it could generate a tsunami wave of 70-85 metres within the fjord. The mountain has been under continuous scientific monitoring since 2005.
How much warning would there be before an Akerneset collapse?
Based on geological models and the monitoring data, experts estimate a minimum of 73 hours of warning before a potential catastrophic collapse. The rock moves at a rate of a few centimetres per year, and any acceleration would be detected immediately by over 50 sensors including GPS stations, extensometers, seismographs, and ground-based radar. A significant acceleration phase would precede any collapse by days or weeks.
Would a tsunami from Akerneset reach cruise ships in Geirangerfjord?
In the worst-case scenario, a tsunami of 70-85 metres could propagate through the narrow fjord. However, this is why the monitoring and evacuation system exists. At the first sign of significantly accelerated movement, the fjord would be closed to shipping and evacuated. Cruise ships would not be allowed to enter, or would be moved out, well before any collapse could occur.
Has the Akerneset rock slope moved recently?
Yes, Akerneset moves continuously at a very slow rate of a few centimetres per year. This slow, steady movement has been consistent since monitoring began in 2005. There has been no significant acceleration that would indicate imminent danger. The back-crack (the visible fissure at the top of the slope) is a dramatic sight, but the movement rate remains stable.
Can I visit the Akerneset visitor centre on a cruise stop?
The Geiranger Skywalk (also known as the Norwegian Fjord Centre) at Dalsnibba includes exhibits about Akerneset and the geological forces shaping the fjords. The main Akerneset monitoring station is not open to tourists, but the visitor centre in Geiranger village and the Skywalk provide excellent educational exhibits about the landslide risk and monitoring system. These can be visited during a standard cruise port day.
What other natural risks exist for cruise passengers in Norwegian fjords?
Norwegian fjords are among the safest waterways in the world for cruise ships. Smaller rockfalls occur occasionally throughout western Norway but are extremely localised. Weather-related risks (fog, wind) are the most common reason for itinerary changes. The risk from Akerneset is exceptionally well-monitored compared to similar geological hazards elsewhere in the world.