Global Volcanism Program | Image GVP-02559

Isanotski volcano, sometimes referred to as "Ragged Jack," has been extensively dissected by glaciers. Although historical eruptions in the 18th and 19th centuries have been attributed to Isanotski, these reports from an infrequently visited region with notoriously poor weather must be considered somewhat suspect. Copyrighted photo by Katia and Maurice Krafft, 1978.

Isanotski volcano, sometimes referred to as "Ragged Jack," has been extensively dissected by glaciers. Although historical eruptions in the 18th and 19th centuries have been attributed to Isanotski, these reports from an infrequently visited region with notoriously poor weather must be considered somewhat suspect.

Copyrighted photo by Katia and Maurice Krafft, 1978.

Isanotski Peaks