Borel lived in Bern and created in his spare time at least two reliefs, whose methods of manufacture he acquired self-taught. He spent some time in the area Weisshorn – Zinalrothorn and therefore ventured to create a relief of this region.

[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.155