Engadine Valley

The Engadin or Engadine (Romansh:  Engiadina , German: Engadin, Italian: Engadina, French: Engadine; lit.: Valley of the Inn people) is a long high Alpine valley region in the eastern Swiss Alps located in the canton of Graubünden in most southeastern Switzerland with about 25,000 inhabitants. It follows the route of the Inn (Romansh: En) from its headwaters at Maloja Pass in the southwest running roughly northeast until the Inn flows into Austria, one hundred kilometers downstream. The En/Inn subsequently flows at Passau into the Donau, as the only Swiss river. The Engadine is protected by high mountain ranges on all sides and is famous for its sunny climate, beautiful landscapes and outdoor activities.

The Romansh toponym Engiadina was first attested as Latin vallis Eniatina in AD 930. A derivation from the reconstructed ethnonym *Eniates (with a Celtic suffix -ates denoting "settlers, inhabitants", as in Licates or Atrebates) has been suggested, with the first part of the ethnonym in turn containing the name of the En (Aenus (Enus)).

...
Wikipedia