Smoky plumes of sulphur fumes,
yellow against those molten rocks,
this scene’s by a volcano
where eruptions haven’t stopped.

Splashing sea with hissing glee
we see where steaming lava ran
into the chilly ocean and
turned to dark obsidian.

The reddest, hottest minerals,
when slowly cooled, turn crystalline.
But liquid rocks are shocked to glass
when quickly cooled by ocean’s brine.

https://kids.kiddle.co/Obsidian