The roughly 10-km-wide Ketoi island is shown in this September 2018 Planet Labs satellite image monthly mosaic (N is at the top). Ketoi is the older edifice and caldera, and Pallas Peak is the cone with a summit crater that has formed within it, NE of Ketoi Lake. Fumaroles are active on the NE flank of the cone.

Satellite image courtesy of Planet Labs Inc., 2018 (https://www.planet.com/).

Copyrighted image used with permission. All Rights Reserved. Contact photographer for any usage requests.

Keywords: island volcano | crater | caldera | stratovolcano

Ketoi