Graubünden or Grisons (German: Graubünden, [ɡraʊˈbʏndən] ( listen); Italian: Grigioni[ɡriˈdʒoːni]; Romansh: Grischun[ɡʁiˈʒun] ( listen); see also other names) is the largest and easternmost canton of Switzerland. The canton shares borders with the cantons of Ticino, Uri, Glarus and St. Gallen and international borders with Italy, Austria and Liechtenstein. The name Graubünden translates as the "Grey Leagues," referring to the canton's origin in three local alliances, the League of God's House, the Grey League, and the League of Ten Jurisdictions. Graubünden is also home to three of Switzerland's ethnic groups and the subsequent languages of Swiss German, Italian and Romansh are all native to the state. It is also the only canton where the Romansh language is still spoken.
Cairn is a man-made pile (or stack) of stones. It comes from the Scottish Gaelic: càrn (plural càirn). Cairns are found all over the world in uplands, on moorland, on mountaintops, near waterways and on sea cliffs, and also in barren desert and tundra areas. They vary in size from small stone markers to entire artificial hills, and in complexity from loose, conical rock piles to delicately balanced sculptures and elaborate feats of megalithic engineering. Cairns may be painted or otherwise decorated, e.g. for increased visibility or for religious reasons.
In modern times, cairns are often erected as landmarks, a use they have had since ancient times. Since prehistory, they have also been built as sepulchral monuments, or used for defensive, hunting, ceremonial, astronomical and other purposes.