There are at least two artists sharing the name "Semaphore": (1) a post-shoegaze band based in Brooklyn, New York and (2) a rock band based in London, England
These are photos from concerts where Semaphore played, so they may be of other bands that played the concert as well.
Bled Fest 2019 May 25, 2019 Howell, Michigan, United States Uploaded by A Preezy
The Big Chill Festival 2009 Aug 6 - 9, 2009 Eastnor, UK Uploaded by Maf Daniel
