A man was lost in a crack in the town a few days ago, falling into the crack, then into a hole leading to a larger chamber underneath. The chamber had water in it experiencing tidal flow. His body was not recovered. If magma erupts into such cracks it could cause steam explosions (phreatic or phreatomagmatic eruptions).
What about lava makes it so we can’t redirect the flow around neighborhoods with these things?
Imagine owning the house over the road where the lava is heading right now, watching the disaster in slow motion. I guess the lava flow could stop right in front of it?
Edit: Nevermind ...
Iceland is such a beautiful place.. although I was angry and sad for most part of the trip seeing how tourism changed Iceland over the last 20 years. As recently as 2014 we had to ask the locals in mostly sign language and paper maps how to navigate the Westfjords; there's 5G now in even the last corner of the island.. guess I'll need to resort to Svalbard and Greenland to go truly off-grid in the future :-)
Google Maps isn't too useful: "Sorry, we could not calculate driving directions from "Reykjavík, Iceland" to "Grindavik, Iceland"