There are more than one artist by the name of Back Oil.
These are photos from concerts where Black Oil played, so they may be of other bands that played the concert as well.
Mayhem Festival 2012 Jun 30, 2012 San Bernardino, California, United States Uploaded by Andysoto23
Mayhem Festival 2012 Jun 30, 2012 San Bernardino, California, United States Uploaded by Ruiner Alamilla
Mayhem Festival 2012 Jun 30, 2012 San Bernardino, California, United States Uploaded by Revanant007
