Hello, the position was deduced mainly from these sources: (1) https://en.wikipedia.org/wiki/List_of_Swiss_cantons_by_elevation (2) https://www.peakbagger.com/peak.aspx?pid=9920 alongside the topo map.

It may be that the location should be closer to the village of Les Arales - I'd of course be happy for anyone to improve the accuracy of its location. Thanks.