There are multiple artists named Altamont.
These are photos from concerts where Altamont played, so they may be of other bands that played the concert as well.
Melvins / Big Business / Altamont / Porn Oct 25, 2006 Charlotte, North Carolina, United States Uploaded by Daniel Petty
Jello Biafra And The Melvins / Melvins / Altamont Nov 16, 2005 Los Angeles, California, United States Uploaded by Spanky90068
Jello Biafra / Melvins / Altamont / Bloodhag Nov 2, 2005 Seattle, Washington, United States Uploaded by Taculb