Your Most Likely Scenario

[Nix]

I'll see if I can get some links together.

Saw a documentary some time ago about the Yellowstone caldera. These super volcanoes are fortunately rare but when they blow, you know about it! Basically, Yellowstone is overdue. It has been proven that this caldera blows at regular intervals and affects the world mainly with the tons of ash in Earth's atmosphere blocking out the sun etc. NOT total wipe out but certainly nuclear winter scenario where it could take years to recover. The planet does survive this, it has done before, not sure about aliens from planet Ork though!

Normal volcanoes explode, lava flows out, things eventually peter out and you have a slightly bigger mountain. Caldera lava consists of pressurised gas that is unable to escape. When these babies blow, they do it all at once, similar to a can of Coke that you open after someone kindly shakes it for you.

The threat is real. They reckon that when Yellowstone does go, the bang will be the loudest sound ever heard.

So, Jonas, mutant Zombies is the least of my worries.