Isorno

Isorno was a municipality of the district Locarno in the canton of Ticino in Switzerland.
History.
The former municipality was created in 2001 by a merger of Auressio, Berzona and Loco. On 10 April 2016, the former municipalities of Gresso, Isorno, Mosogno and Vergeletto merged to form the municipality of Onsernone.