The Dakataua Caldera and Crater Lake, PNG

Dakataua caldera and lake.  Screen capture via Google Maps

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Does a Caldera Form the Islands of the Four Mountains, Alaska?

Islands of the Four Mountains with volcanoes named.  Image courtesy Quantum Spatial Photo, via Power, et al, Dec 2020 via Volcano Discovery

Gunung Semeru, East Java, Indonesia

Morning view across Bromo – Tengger and Sandsea caldera toward Semeru in eruption.  Image courtesy Tan Yilmaz, flickr, Aug 2008

Kulshan Caldera and Mount Baker Volcanic Field, Washington State, USA

Glaciated Mount Baker from neighboring Mount Shuksan.  Area to the right is the Kulshan Caldera.  Jagged peak is glacially eroded basalts of Mount Shukshan.  Image courtesy Lee Siebert, 1971, Smithsonian GVP

Chingo Volcanic Field, Guatemala

El Chingo volcano.  Image © Leo Muyshondt, Dec 2004

Lassen Volcanic Center, California

Skyline above timberline of the Lassen dome field.  Major domes visible.  Cinder Cone is in the foreground, the most recent feature.  Lassen Peak in the center background.  Other recent domes labeled.  Image courtesy Lassen Volcanic Center, USGS

Mount Martin and Alagogshak Volcanoes, Katmai, Alaska

Summit of Mount Martin showing active fumaroles and small acidic lake.  Image courtesy SR Wood, US NPS, Katmai

Are Exceptionally Violent Volcanic Eruptions More Common Than We Think? Part 2 of 2

Landsat image of Lake Taupo on New Zealand North Island.  Image courtesy NASA Landsat, 2005 via Wiki

Ksudach Caldera System, Kamchatka

Ksudach volcano with two crater lakes. Breached Shtyubel volcano is in the northern portion of the main caldera. Note denuded flanks via the 1907 eruption. Volcanic structure at the One O’clock position is unnamed. Screen capture from Google Maps.

Apaneca Range, El Salvador

Apaneca Range from the S. Cerro de Apeneca on the left, Las Ninfas – Laguna Verde complex in the center. Cuyanausul, Cerro de la Rana, Cerro Aguila, Cerro los Naranjos to the right. The Concepcion de Ataco Caldera is on the other side of the range, obscured by the line of volcanic cones. Image courtesy Lee Siebert, 1999 via Smithsonian GVP