The shelter is a province/territory/something of Roanoke—we are a prepositional phrase. I live in America and still technically have free speech although you never know what the NSA thinks is alarming, and if they think I’m any kind of weird, it is probably the tin foil kind, who are generally harmless, and socially and online, speech is more-or-less free. So I’m going to mention other places in Elfhame if it is pertinent.
One thing that is a little annoying about the continental collision were the Atlantic islands it destroyed or damaged. The Atlantic ocean in Elfhame has a chain of islands that hold the veil, and of course there are the equivalents of the Canary Islands and things like that. The islands existed as a continent first, but it disrupted the currents, causing global environmental problems, and so the gods split the islands up and distributed them between the currents, often with many islands sinking into the ocean and hovering into the air.
(The Atlantis Plato refers to is probably this, but nobody knows exactly where the islands most closely related to the Mediterranean are because they got spread out, but tradition says they are more-or-less adjacent to the Mediterranean.)
Some of the islands were very involved with general Elfhame cultural development, while others were not, but either way, both were very important.
So now, the currents are interrupted again, and long enough to mess up the marine life seriously, which messes up the merfolk’s food supply, so they are also starving, even though people say, “They live in the water already, so they’re fine.” Not if the plankton can’t get enough sunlight and die, so the fish don’t have enough to eat, so the big animals like sharks and whales don’t have enough fish to eat, so they eat everybody.
But, anyway, also the Atlantic islands not directly damaged by the continent began flooding slightly, enough for the houses built on shore but far enough away to withstand normal storms to flood. The veil moved so much normal “veil weather” (don’t know what else to call it) became much stronger and that can cause damage from things falling out of the veil, the veil sucking things in, random electromagnetic currents, random paranatural currents which are just as dangerous, the veil tearing or falling down, or speeding up the formation of weather, all of which can affect non-Atlantic islands, but mostly affect them.
Approximately half the population of the Atlantic islands died from it and a couple of the populations of the islands were completely wiped out, or the few remaining managed to reach somewhere else and haven’t always been found yet. They can’t enough seafood to eat, the weather is weird and their islands are too small for large-scale agriculture, their trade routes are mostly gone or extremely long and difficult, and the veil is dangerous to live near.
Many of the veil workers died and so the islands have to train others to take their place, but sometimes it was an inherited lifestyle and the lines died out. Sometimes the workers continued to use the more scientific-like method, sometimes they returned to using only the traditional methods, and sometimes they did both, depending on the situation, and so there can be miscommunication and internal drama.
If somebody had warned them beforehand, they probably could have evacuated, but they had no warning. They probably wouldn’t be able to stop the continent or prevent damage to the veil, but running away should always be an option.