Underwater Volcano Creates Bubbles More Than a Quarter-Mile Across

Live Science ^ | Yasemin Saplakoglu

[BenLurkin]

In the early 20th century, sailors near Alaska reported seeing black bubbles seeming to boil out from the sea, each one the size of the dome of the capitol building in Washington, D.C. They weren't the only sailors who reported the bizarre phenomenon, and they weren't mistaken, except for one thing … the bubbles were much larger.

When the mostly underwater Bogoslof volcano in the Aleutian Islands erupts, it produces giant bubbles that can reach up to 1,444 feet (440 meters) across, according to a new study. These bubbles are filled with volcanic gas, so when they burst they create volcanic clouds tens of thousands of feet in the sky, said lead author John Lyons, a research geophysicist at the Alaska Volcano Observatory of the U.S. Geological Survey.

These volcanic clouds were captured in satellite images taken after the Bogoslof volcano last erupted in 2017 — but the bubbles themselves were never photographed

[Pete from Shawnee Mission]

Misremembered the name! Witches hole.

https://www.metafilter.com/119805/The-Wreck-in-Witchs-Hole-the-sole-casualty-of-Britains-Bermuda-Triangle

[BatGuano]

Just returned from a trip to Italy and Sicily. Had a chance to go up Mt. Etna. Not to the top, of course, but high enough to feel it when climbing a gradual incline around one of the small craters surrounding the main one. It is constantly giving off gasses. Two major plumes are white and are water vapor just like a cloud. The dark gray, almost black plume is loaded with nasty stuff. The crater rim is mostly covered with a yellow substance that is Sulpher. The other elements and compounds read like a chemists laboratory. We asked people that live east of the mountain if there are problems with the ash clouds and they shrug and say it is just a thing they accept. The soil is fertile and vineyards abound.
Remember the Iceland Volcano a few years ago? It spread its eruption “stuff” over thousands of miles like all volcanoes do...
We should be crying loudly to “Cap all Volcanies” because they pollute far more than combustion engine vehicles.