Egger was a high school teacher in Basel. However, he did not make the reliefs for teaching, but saw their production as an ideal combination of his love of the mountains – he was an enthusiastic alpinist – and his manual skills. He devoted himself to relief making on a larger scale only after his retirement.

[1] This article bases on Mair, Toni. Grieder, Susanne. Das Landschaftsrelief – Symbiose von Wissenschaft und Kunsthandwerk. Mit Schweizer Reliefkatalog. Verlag hier+jetzt. Baden, Schweiz. 2006. S.157.