There's not a single cloud in the sky and it is perfectly blue. Nor is there a single contrail to be seen anywhere. This is indeed a very rare sight to experience, when the sky is normally criss-crossed by hundreds of fresh and fading airline streaks of vaporized air.

The sky seems so peaceful, but scary at the same time, making you feel religious just in case something foreboding is about to occur.

Viewing such tranquility, it is hard to imagine that no more than a couple thousand kilometers to the west there are violent eruptions spewing millions of tons of ash and rock into the sky. Is it ready to blow up?

The previous time the same volcano was so active almost two hundred years ago, it lasted more than a year. So we should prepare ourselves for a long haul I'm afraid. Just hope that none of that ash falls down here.