San Francisco Mountain is the highest point in Arizona, rising 12,633 feet into the sky. However, this strato-volcano has a collapsed top and if the former height of it were restored on the landscape today, the cone would top out at about 15,300 feet. This means that Arizona's San Francisco volcano might once have been the tallest mountain in the lower 48 states.
Back in the 1970's I started a tradition of hiking to the top of the San Francisco Peaks on my birthday. This past July 1 I did it again with my wife Helen.
andesite pokes through the green carpet and exposes vesicles, that formed when gas escaped as the lava hardened into rock.
Agassiz Peak is seen in the distance, the second highest peak in the state.
fulgarite where the rock was melted from the intense heat.