# If/When Vesuvius Erupts Again, Is Naples Screwed? Is Tokyo Screwed When Fuji Erupts Again? **URL:** \ **Category:** Factual Questions\ **Created:** [July 4, 2022, 9:11pm UTC](https://boards.straightdope.com/t/if-when-vesuvius-erupts-again-is-naples-screwed-is-tokyo-screwed-when-fuji-erupts-again/967422 "2022-07-04T21:11:34Z")\ **Posts on this page:** 9\ **Page:** 2
**Author:** ![SmartAleq](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/smartaleq/32/163_2.png) [@SmartAleq](https://boards.straightdope.com/u/SmartAleq)\ **Post date:** [July 5, 2022, 10:51pm UTC](https://boards.straightdope.com/t/if-when-vesuvius-erupts-again-is-naples-screwed-is-tokyo-screwed-when-fuji-erupts-again/967422/21 "2022-07-05T22:51:00Z")
Well, cinder cone anyway–and it definitely is, it’s where the basketball court is next to the parking lot. You can see the red lava rock all around the curved wall to the west side of the court. Pretty neat. If you keep your eye out you can see all kinds of fossil volcanic remnants, cinder cones and lava flows galore all over the Cascades. My favorite is up where Hwy 242 comes over from Sisters to McKenzie Bridge, goes through a 6000 year old lava flow and there’s a cool mountain observatory at the top of the pass, built out of black volcanic rock. It’s a great drive. ---
**Author:** ![Fiendish\_Astronaut](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/fiendish_astronaut/32/3295_2.png) [@Fiendish\_Astronaut](https://boards.straightdope.com/u/Fiendish_Astronaut)\ **Post date:** [July 5, 2022, 11:44pm UTC](https://boards.straightdope.com/t/if-when-vesuvius-erupts-again-is-naples-screwed-is-tokyo-screwed-when-fuji-erupts-again/967422/22 "2022-07-05T23:44:05Z")
The city of Goma in east Democratic Republic of Congo lies next to a huge live volcano. But that’s the least of its problems. On its other side Goma sits next to a huge lake called Kivu. Millions of tons of carbon dioxide and methane from magma beneath the surface have been leaking into the lake over a very long period of time. It’s all dissolved into the lower layers of the water in the lake. Water brought up from the deep bubbles furiously as it gives up its gasses. One landslide along its hundreds of miles of coastline will release an enormous invisible cloud of death. Geology is dangerous. ---
**Author:** ![MrDibble](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/mrdibble/32/114_2.png) [@MrDibble](https://boards.straightdope.com/u/MrDibble)\ **Post date:** [July 6, 2022, 8:33am UTC](https://boards.straightdope.com/t/if-when-vesuvius-erupts-again-is-naples-screwed-is-tokyo-screwed-when-fuji-erupts-again/967422/23 "2022-07-06T08:33:42Z")
> [@Stranger\_On\_A\_Train](#): > > On even a short geological timescale, there are few places on Earth that are really secure [Lots of places](https://en.wikipedia.org/wiki/Shield_(geology)) are fine. It just happens to be that they aren’t really places most people want to live - being old and stable, they often have quite poor soils, and most of them are in less-preferred climate zones. ---
**Author:** ![Smapti](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/smapti/32/17938_2.png) [@Smapti](https://boards.straightdope.com/u/Smapti)\ **Post date:** [July 6, 2022, 9:00am UTC](https://boards.straightdope.com/t/if-when-vesuvius-erupts-again-is-naples-screwed-is-tokyo-screwed-when-fuji-erupts-again/967422/24 "2022-07-06T09:00:27Z")
> [@ftg](#): > > I take it you’re not around Tacoma or S. Seattle. Olympia. We’ll probably be _mostly_ OK when Tahoma blows, but we’re gonna get cut off from points north when the Nisqually basin gets flooded with a 50-foot-tall lahar and blocks I-5, and whether the Narrows Bridge withstands the ensuing havoc is anyone’s guess. ---
**Author:** ![AK84](https://avatars.discourse-cdn.com/v4/letter/a/85e7bf/32.png) [@AK84](https://boards.straightdope.com/u/AK84)\ **Post date:** [July 26, 2022, 4:03am UTC](https://boards.straightdope.com/t/if-when-vesuvius-erupts-again-is-naples-screwed-is-tokyo-screwed-when-fuji-erupts-again/967422/25 "2022-07-26T04:03:39Z")
If I have read that map right, those places include all of India. Now admittedly as a Pakistani I am sympathetic to the idea it’s an unfit place to live (😉 ) but on a serious note it seems off. ---
**Author:** ![MrDibble](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/mrdibble/32/114_2.png) [@MrDibble](https://boards.straightdope.com/u/MrDibble)\ **Post date:** [July 26, 2022, 5:00am UTC](https://boards.straightdope.com/t/if-when-vesuvius-erupts-again-is-naples-screwed-is-tokyo-screwed-when-fuji-erupts-again/967422/26 "2022-07-26T05:00:57Z")
> [@AK84](#): > > If I have read that map right, those places include all of India Not _all_ of India, no. Just the [southern 2/3](https://en.wikipedia.org/wiki/Indian_Shield). Why, do you know about a bunch of active volcanoes in the Ghats I don’t know about? ---
**Author:** ![AK84](https://avatars.discourse-cdn.com/v4/letter/a/85e7bf/32.png) [@AK84](https://boards.straightdope.com/u/AK84)\ **Post date:** [July 26, 2022, 6:14am UTC](https://boards.straightdope.com/t/if-when-vesuvius-erupts-again-is-naples-screwed-is-tokyo-screwed-when-fuji-erupts-again/967422/27 "2022-07-26T06:14:16Z")
As an aside why are there no volcanos in the Himalaya region. Its two plates hitting each other so my school geography gets very confused. ---
**Author:** ![MrDibble](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/mrdibble/32/114_2.png) [@MrDibble](https://boards.straightdope.com/u/MrDibble)\ **Post date:** [July 26, 2022, 7:09am UTC](https://boards.straightdope.com/t/if-when-vesuvius-erupts-again-is-naples-screwed-is-tokyo-screwed-when-fuji-erupts-again/967422/28 "2022-07-26T07:09:43Z")
It’s a [continent-continent collision](https://en.wikipedia.org/wiki/Continental_collision), those tend not to have as-deep subduction and consequently no deep melting to feed ongoing vulcanism. Contrast with the Pacific Ring of Fire, which is denser oceanic crust subducting, or the Mediterranean, which is a remnant of the Neotethys, and hence also oceanic crust. ---
**Author:** ![md-2000](https://avatars.discourse-cdn.com/v4/letter/m/9d8465/32.png) [@md-2000](https://boards.straightdope.com/u/md-2000)\ **Post date:** [July 26, 2022, 6:15pm UTC](https://boards.straightdope.com/t/if-when-vesuvius-erupts-again-is-naples-screwed-is-tokyo-screwed-when-fuji-erupts-again/967422/29 "2022-07-26T18:15:28Z")
> [@Paul\_was\_in\_Saudi](#): > > I wonder what the odds are of some huge Biblical-scale seismic happening somewhere in this century. It seems we dodged the bullet pretty well in the last century. The Indian Ocean tsunami may qualify for that category - destruction across a wide range of that area, mitigated only by modern tech being able to distribute relief quickly. [Previous page](https://boards.straightdope.com/t/if-when-vesuvius-erupts-again-is-naples-screwed-is-tokyo-screwed-when-fuji-erupts-again/967422.md?page=1)