I wonder how such tunnels would be impacted in earthquakes and tectonic plate movements. Would they collapse on everyone inside them? Would they (or even COULD they) be reinforced to avoid such problems? And you have to move a lot of air in tunnels or they would become death traps.
I wonder how such tunnels would be impacted in earthquakes and tectonic plate movements. Would they collapse on everyone inside them? Would they (or even COULD they) be reinforced to avoid such problems? And you have to move a lot of air in tunnels or they would become death traps.