There are at least 2 artists under this name:
These are photos from concerts where Adamantium played, so they may be of other bands that played the concert as well.
Psycho Las Vegas 2021 Aug 20 - 22, 2021 Las Vegas, Nevada, United States Uploaded by Whiskey Echo Bravo
Last Ones Left / Fighting Gemini / Adamantium / Born From Ruins / Lower Life Form Nov 17, 2014 Houston, Texas, United States Uploaded by Last Ones Left Houston
Adamantium / Last Ones Left / The Earth As We Know It / Caches The Ghost Nov 23, 2010 Houston, Texas, United States Uploaded by Last Ones Left Houston
Hellfest 2000 Jul 1 - 2, 2000 Syracuse, New York, United States Uploaded by Michaela Morgan
Bane / Cave In / Grade / Death by Stereo / The Explosion / Adamantium / My Hero Zero Jun 13, 1999 Kansas City, Missouri, United States Uploaded by Kansas City Concert Fiendz
