Fig. 8
Historic painting of the 1806 ad catastrophe drawn by 16 years old eyewitness David Alois Schmid, who observed the rock avalanche from his hometown Schwyz. The entire original painting is shown on the left side; with close up of the swampy western shore (Sägel area) on right side. Schmid clearly illustrates that upon the impact of the rock masses the substrate of the swampy deposits were laterally ejected towards the lake in vegetated slices reaching heights of small houses. This process subsequently triggered the devastating water waves on Lake Lauerz