From Roman times until the present the ViaJura can be followed through all epochs – a unique experience. The change from the Jura mountains offering splendid views, to wide valleys and wild ravines keeps the senses alert. And at the natural arch of Pierre-Pertuis with its antique inscription and St. Martin’s cord veiled in secrecy near Frinvillier, it is gradually possible to understand the history in a way that makes it unique.