Recent Activity at Little Sitkin, Alaska

NASA Landsat image of Little Sitkin island. Image courtesy SJ Smith via AVO, 2001

The Nitrogen Geysers of Triton

Annotated Voyager 2 photo of active nitrogen geysers on Triton. Photo taken on Voyager 2 1989 flyby of Neptune and Triton. Photo courtesy NASA JPL via Nitrogen Gas blog, 2017

The Double Caldera of Mount Suswa, Kenya

Mount Suswa from the rim of the oldest caldera. Image courtesy African Spice Safaris

Mono-Inyo Craters – the Most Recent Activity at Long Valley, CA

Annotated satellite image of Mono-Inyo Craters. Mammoth Mountain dome domplex is at the bottom of the image. Mono Lake is at the top. Long Valley is to the east (right) of Mammoth Mountain. Image courtesy Wikipedia Mono-Inyo Craters

Hokkaido 4 – The Akan Caldera, Hokkaido, Japan

Annotated topographic map of Akan caldera, caldera lake, and post-caldera volcanoes. Lake Kussharo is off the image at the upper right. Image courtesy Plate Tectonic Narod.ru.

Hokkaido 3 – The Kutcharo Caldera, Hokkaido, Japan

Lake Kussharo in winter. Note that the lake is not frozen. Image courtesy Ten via YouTube.

 

This is the second of three posts on the East Hokkaido Caldera Field.  This post is centered on the Kutcharo (Kussaro or Kuttyaro) volcanic complex.

The Atitlan Caldera System, Guatemala

Volcan Toliman (center right), Atitlan (far right) from Volcan San Pedro (foreground). Note cinder cone on northern flank of Toliman. Lake Atitlan in the foreground and to the left of the photo. Heavily vegetated lava flows on the near flanks and north facing flanks of Toliman. Village in the center foreground. North is to the left of the photo. Lake Atitlan fills about half the Atitlan III caldera. Image courtesy DIY Travel HQ

 

Special note to our readers:

Many thanks to all who filled in the survey.  A few great suggestions have come in. Now we have to think about the “logistics” to put some of them into action. As we are allowed to keep the survey app running to a certain limit of entries we have decided to put the post up in our top menu. Perhaps the one or other of you still want to have their say. Be reminded that you may answer even just one question and then click the “Finish” button. That’s okay – we appreciate every single bit of input!

Hokkaido 2 – The Mashu Caldera, Hokkaido, Japan

Mashu caldera in winter with Kamuinupuri to the right of the photo and the Kamuishu dome in the middle of the lake. Image courtesy Wiki

 

The Toya – Usu post led me to the interesting volcanic history of Hokkaido, Japan.  Found a multiple caldera complex in eastern Hokkaido with three calderas in close proximity to one another.  Will write about these for the next few posts.

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

2007 – 2014 Uplift Episode at Laguna del Maule

Laguna del Maule Volcanic Complex. Image courtesy Sernageomin