Vom Viamalabrief

In it, the participants undertake to "fix and make the Richstrass and the daring Tusis and Schams, so man nempt Fyamala zuo howen, uffoorichten und ze machen."

To confirm this agreement, the Rodgenossen asked Count Jörg von Werdenberg-Sargans and the junker Joachim von Castelmur to affix their seal to the document. This was the founding of the Thusner Transit Cooperative, the so-called "Rod" or "Port". It was a link in a chain of six ports between Chur and Chiavenna or Bellinzona.

In addition to maintaining the path through the difficult to pass Viamala, it was their task to receive the goods in Thusis, divide them among the cooperative members and transport them undamaged through the Viamala. Thus, the Splügen or San Bernardino route became the most important transit axis around the world.

The Portenwesen existed until the 19th century. Today, the Viamala letter is in the archive of the municipality of Thusis. On the town hall square, through which a large part of the transport of goods ran at that time, the fountain designed by the artist Giuliano Pedretti is a reminder of those times.