viamala gulch in the swiss canton to graubuenden

age ages alliances bad bernadino blue bronze bush canton caravans commercial dangerously deeply distance dug europe fall freight graubuenden grey ground gulch hauliers height high historically hole iron little long mala menacingly middle mountains mystically nettle rice river rock rocky roman san stone stony swiss switzerland thusis traffic travellers tree turquoise via viamala water way whirlpool wood zillis