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

Sint Eustatius and Saba Islands, Lesser Antilles

Looking to the south along Sint Eustatius Island.  Older volcanics are in the foreground.  The Quill is on the southern end of the island.  Neighboring St Kitts and Mt Liamuiga is visible across the neighboring strait to the south.

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

Ushishur, Kuril Islands, Russia

Airborne photo of Ushishur volcano, Yankich Island, central Kurils. Caldera is clearly visible with 4 post-caldera domes. Photo taken looking generally N. External hydrothermal plume visible to the E at the 0300 position. Neighboring Reponkich Island visible to the NE. Image courtesy Eugene Kaspersky on Twitter, Oct 2019

Arjuno-Welirang and the LUSI Mud Volcano, Java

LUSI mud volcano.  Photo is undated, but likely around 2008 – 2009 after containing levees subsided.  White steam, hot water, liquid-rich mud, and natural gas is being erupted at the time.  Image courtesy Earth Magazine, 2018

The White Island Phreatic Eruption of Dec 9, 2019

White Island from helo Dec 10, the day after the eruption.  Note the new cover of ash, residual steam from the crater, and the significant outflow of mud into the surrounding ocean.  Image courtesy RNZ.co

Recent Activity at Little Sitkin, Alaska

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

Volcan Almolonga and Cerro Quemado, Guatemala

Volcan Cerro Quemado with most recent lava flow in the foreground. Image courtesy Guatemala.com

What’s she up to? – Vn. LASTARRIA (Chile)

“At times, the path is well-marked, but it crosses and intersects with many more that lead nowhere…” 2007 (© Jorge Alonso, via viajeros4x4.com). Approaching Volcán Lastarria from the NW.

GVP said in 2007: “The rarely visited Lastarria has not erupted in historical time, but has displayed strong fumarolic activity for at least 67 years. This is the first Bulletin report ever issued on this volcano; it presents new images of the steaming edifice…”

Not that the volcano wasn’t known as such – persistent fumarolic activity has been reported from the northwestern flanks since the earliest records were made. However, even the most recent eruptions appear to have predated the Spanish colonists: no records of large or small eruptions have ever been found. Yet, in 1900, Dr. L. Darapsky said “Lastarria volcano… is the only one in the district which shows signs of volcanic activity,