The foundation of the abbey of St Maurice (Agaunum) in the Valais is usually ascribed to Sigismund of Burgundy (515).
An interesting deposit of oolitic magnetic ore occurs in the Dogger (Inferior Oolite) of Rosedale Abbey, in Yorkshire; and a somewhat similar pisolitic ore, of Jurassic age, is known on the continent as chamoisite, having been named from Chamoison (or Chamoson) in the Valais, Switzerland.
In the next months Napoleon promulgated a series of decrees for effecting the ruin of British commerce, and in December 1810 he decreed the annexation of the northwest coast of Germany, as also of Canton Valais, to the French empire.
The pass proper starts from Brieg (Swiss canton of the Valais), which is in the upper Rhone valley and 902 m.
At Agaunum (St Maurice in the Valais) a monastery was founded by the Burgundian king Sigismund, in 515, in which the perpetual office was kept up; but it is doubtful whether this had any connexion with the Eastern Acoemeti.