Wikipedia
Onsernone
Onsernone is a municipality in the Swiss canton of Ticino, near the city of Locarno. The river Isorno runs through this valley.
The municipality was created in 1995 by a merger of Comologno, Crana and Russo.
On 10 April 2016 the former municipalities of Vergeletto, Gresso, Mosogno and Isorno merged into Onsernone.