It extends from Chakachamna Lake (80 miles/130 km southwest of Anchorage) to Unimak Island, which is at the tip of the Alaska Peninsula.

The Aleutian Islands are (geologically) a partially submerged western extension of the range that stretches for another 1,600 km (1000 mi).

A giant, rapidly moving ash and gas cloud shot up to a height of 15,240 m as a result of this eruption.

These emissions formed a sulfate aerosol layer that totaled a transfer of 1.6 Tg of SO2 into the stratosphere and disturbed flights over this area for a short period following the eruptions.

[3] The 7.9 Mw Aleutian Islands earthquake occurred in June 2014 at an intermediate depth of 107 km.