Raging volcano as seen from Stórihrútur. Filmed by me, May 2, 2021. Last night I completed the 8 Volcano trip. Now volcano acts differently. It acts in a way similiar to geyser exploding every 5 minutes or so. Then lava sinks back into crater and volcano calms down. The exploding episodes start from constantly increasing lava boilup. Some episodes are very powerful shooting lava 200 meters above the volcano accompanied by powerful humming noise compared to those of a plane that takes off with much trembling and earth shaking. No new vents. No other craters are active. Tons of fascinating footages coming today and tomorrow."
Towards the end of the video note the gathered crowds. In the antipodes they have learned that close up observation of volcanic activity can get too exciting. www.bbc.com/news/world-asia-50723352
Sinkholes and cracks are nothing new. Over time they break stuff.
I used to live in Pittsburgh. A number of houses there had gigantic jacks under one or two corners to keep them level - it was blamed (probably reasonably) on all the mining that had happened in the area causing the ground to shift.
Apply enough total force to just about anything - even a very slow amount over a long time - and it will deform or break.
ALL infrastructure needs either periodic maintenance or periodic replacement (or both, of course).
We may want to put the July 2024 date on our calendars (only 3 years) as this is the supposed time of the Earth's transit through the emerging "great planetary allignment" that occurs every approximate 2000 years. There are studies suggesting that the 11-year solar cycles are associated with planetary allignment effects on the sun.
What effect do the rarer grand allignments have on the sun and planet Earth. Observational capabilities have never been better for capturing data that might help us toward some explanations. I am sure that the Minoans were surprised by Santorini, as were the Romans by Vesuvious. The small number of settlers in Missouri were surely surprised by the great New Madrid quakes of 1811-12 during the Dalton Minimum. Check your insurance policies. I carry coverage which is cheap because I'm about 200 miles (flight distance) from New Madrid. If I lived in New Madrid, it would be quite expensive.