There are at least two bands with this name:
These are photos from concerts where Unearth played, so they may be of other bands that played the concert as well.
Unearth / Chimaira / Skeletonwitch / Molotov Solution Dec 7, 2011 Pomona, California, United States Uploaded by Andysoto23
Unearth / Chimaira / Skeletonwitch / Molotov Solution Nov 30, 2011 Oklahoma City, Oklahoma, United States Uploaded by Julian
Mayhem Festival Aug 13, 2011 Tampa, Florida, United States Uploaded by Brian Walters
Rockstar Energy Drink Mayhem Festival 2011 Aug 7, 2011 Noblesville, Indiana, United States Uploaded by Thomas L Bellamy
Disturbed / Godsmack / Megadeth / Machine Head / Trivium / Suicide Silence / All Shall Perish / Straight Line Stitch / Unearth / Kingdom of Sorrow / Red Fang Aug 2, 2011 Virginia Beach, Virginia, United States Uploaded by 24carfans
Mayhem Festival 2011 Jul 23, 2011 Mansfield, Massachusetts, United States Uploaded by Kyle Brunet