Åkneset is one of the biggest unstable rock slopes which is known in Europe. The unstable area is approximately 600 meters wide and 1000 meters long and the volume is estimated to be between 30 and 100 million m3. The unstable area has a movement rate of 2-15 cm/year. A rock slide will create a tsunami in the Storfjord, Geirangerfjord and Tafjord with a wave height of up to 80 meters, which will have devastating effect on several local communities in the area.
A complex monitoring system based on different types of instruments has been established in the unstable area. Data are collected continuously from these sensors and transferred automatically to the Cautus Geo database. The data are presented to the users via web for further analyses. Warnings are given automatically following unexpected movements or if some of the instruments are failing.