Isanotski Peaks

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Isanotski Peaks
Isanotski Peaks Volcano.jpg
Peak of Isanotski Peaks
Highest point
Elevation 8,106 ft (2,471 m)
Prominence 5,831 ft (1,777 m)
Coordinates 54°46′07″N 163°43′46″W / 54.76861°N 163.72944°W / 54.76861; -163.72944Coordinates: 54°46′07″N 163°43′46″W / 54.76861°N 163.72944°W / 54.76861; -163.72944
Isanotski Peaks is located in Alaska
Isanotski Peaks
Isanotski Peaks
Location Unimak Island, Alaska, U.S.
Parent range Aleutian Range
Mountain type Stratovolcano
Volcanic arc/belt Aleutian Arc
Last eruption Unknown

Isanotski Peaks or Isanotski Volcano, known locally as "Ragged Jack", is a multipeaked mountain on Unimak Island, the easternmost Aleutian Island in Alaska, United States. It is an old, highly dissected stratovolcano, lying about 10 miles (16 km) east of Shishaldin Volcano, the highest peak in the Aleutian Islands. Its height is also often given as 8,025 feet (2446 m).

In contrast to many of the younger, symmetrical volcanoes of the region, Isanotski is topped by multiple rugged pinnacles. This makes climbing or skiing the peak much more challenging than Shishaldin, for example.

While eruptions from 1825 and the 1840s have been attributed to Isanotski, geologists were only able to find evidence of Holocene eruptions on Shishaldin, not on Isanotski. Because of this, the actual date of Isanotski's last eruption is unknown.[1]

See also[edit]


  1. ^ "Isanotski - Historic eruptions". Retrieved 2018-06-14. 

External links[edit]