Swiss Tectonic Arena Sardona

https://t.co/ropz9nV0Am
Sardona, Switzerland – UNESCO World Heritage Site#UNESCO #PatrimonioMundial #WorldHeritage #Welterbe #Philately #Filatelia #Sellos #Stamps #Timbres #Philatelie #Briefmarken #Sardona #GlarnerHauptüberschiebung #PizSardona #Surenstock #SanktGallen #Glaris pic.twitter.com/7ujFEgwGFc

— Unesco stamps wh (@Unescostamps) November 29, 2023