Fracking? I think not.
A planet in a long elliptical orbit approaching from the south? Possibly.
Most likely a domino effect, one is setting the others off.
IIRC the Yellowstone caldera has been rising for years and
they’ve been saying it’s due to blow. The last time was
over 600K years ago, so what are the odds?
“The last time was over 600K years ago, so what are the odds?”
We’re about 200K years overdue.