Gunung Semeru, East Java, Indonesia

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

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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

Mount Taranaki, New Zealand

Taranaki with snowcap. Satellite vent Fanthams Peak to the left of the photo. Image courtesy skimountaineer.com

Lunar Eclipses and Asama Volcano, Japan

A very dark lunar eclipse.  Image courtesy SyFyWire

Debris Avalanche at Mount Meru, Tanzania

Peak of Mount Meru on the northern flank of the volcano looking south. Flank collapse amphitheater clearly visible on the left of the volcano. Image courtesy Wiki

The Deadly 1985 Lahar of Nevado del Ruiz, Columbia

Nevado del Ruiz with steam plume.  Image courtesy Infographic Vennpage.com, Feb 2017

Nevado del Ruiz (also known as La Mesa de Herveo or Volcan Ruiz) is a massive active stratovolcano located some 129 km west of Bogota, Columbia.  Its summit is covered with large glaciers.  It is locally known as the ‘sleeping lion’, meaning that the locals remember and respect its danger.

Mount Ruapehu, New Zealand

Mount Ruapehu in eruption during 1995 eruption sequence.  Image courtesy TRTWorld blog, 2016

Sept. 2006 Eruption of Fourpeaked Volcano, Alaska

Fourpeaked eruption Sept. 17, 2006. Mount Douglas is the larger volcano to the right. Note dual sources for eruptive plume. Photo taken by Lanny Simpson, Alaska High Mountain Images via AVO

Makushin Volcano, Alaska. The 9th Most Dangerous Volcano in the US?

Active fumaroles on Makushin Volcano from Dutch Harbor July 2018. Photo courtesy Abi Woodbridge, via AVO

Why is Akutan the Eighth Most Dangerous Volcano in the US?

Akutan Volcano looking west. Village of Akutan on the north side of the bay in the foreground. Image courtesy Vlad Karpayev, AVO, June 2018. https://avo.alaska.edu/images/image.php?id=117501