Automated Inclinometer System installed in the Portalet landslide

Col du Pourtalet, El Portalet or Portalet d’Aneu is a mountain pass and border crossing in the Pyrenees, between France and Spain.

Installed in 2014, August as part of the European Project Lampre. The system allows to monitor in continuous (2÷4 meas/day) deep displacements on the landslide along 50 m borehole. In early July, the Geohazard Monitoring Group of CNR IRPI (, has made a survey finalized to a summer maintenance and to evaluate the evolution of the landslide and status of the borehole.

The heavy winter snowfalls (> 2.5 m) combined with very low temperatures (until to -18 °C) have considerably stressed the system but without making important problems.