Fig. 1From: The Alpstein in three dimensions: fold-and-thrust belt visualization in the Helvetic zone, eastern SwitzerlandPhysical model of the Säntis area created by Albert Heim in 1905 based on original data from Arnold Escher von der Linth. The model consists of a collection of 2D cross-sections in a 3D array underlain by the geological map of the Säntis area. The model has a size of approximately 1 × 2 m and is displayed in the ETH Focus Terra collection. The picture is taken looking towards the NE of the model along the strike of the structures. Light blue is the Schrattenkalk. The model shows at a glance the lateral variation in the internal structures along the mountain chain axisBack to article page