North of Flims the rock face of Flimserstein stands 350 metres (1,148 ft) high whereas more westerly the slide surface is clearly visible.
The highest hill in the debris area is almost 200 metres (656 ft) higher than Flims at the end of the sliding surface.
[3] Clemens Augenstein from the Geologisches Institut der ETH Zürich explored with Flavio Anselmetti the sediments at a small lake called Dachlisee at 1,137 metres (3,730 ft) near Obersaxen.
A second source is wood that was found inside the debris in the region some 2 miles (3.2 km) upstream of the mouth of the river Rabiusa, which was covered by massive rock identified as being from the Fil de Cassons area, hence reaching this point during the event.
[4] Isotopic surface exposure dating of boulders exposed by the rockslide has yielded an age of 8900 ± 700 years.