On the Bogoslof Hill polygenetic shield volcano, the gentle slope of the flank (< 8 deg) steepens sharply at the northwest spatter cone summit.  The jagged cone rim is breached to the north where a lava lake has drained.

On the Bogoslof Hill polygenetic shield volcano, the gentle slope of the flank (< 8 deg) steepens sharply at the northwest spatter cone summit. The jagged cone rim is breached to the north where a lava lake has drained.

Date: 2000
Volcano(es): St. Paul Island
Photographer: Feeley, T. C.
URL: avo.alaska.edu/image/view/1919
Image courtesy of the photographer.
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