There are multiple artists with the name Mountain.
These are photos from concerts where Mountain played, so they may be of other bands that played the concert as well.
The Beach Boys / Allman Brothers Band / Mountain / The J. Geils Band / Albert King / Country Joe McDonald / Johnny Winter Jun 27, 1971 New York, New York, United States Uploaded by Zimtrim
Mountain Jun 14, 1971 Cleveland, Ohio, United States Uploaded by Zimtrim