[imesh]

There is certainly enough lava. The eruption that occurred in 2018 in my home town produced 1 billion cubic yards or 914402.757839 cubic kilometers.

https://volcanoes.usgs.gov/vsc/file_mngr/file-224/OVERVIEW_K...

I imaging the outgassing of the plastic would be pretty terrible but the volcanic gas is pretty damaging too. But yes, I imagine there are a hundred different reasons this wouldn't really work out.

[minitoar]

I don’t think that math is right. 1 billion cubic yards is like less than 1 cubic km.

[imesh]

You are correct. I messed that up bad and forgot how dimensions worked.

[midasuni]

Yet even ignoring those two issues, you included 12 significant figures on a number that was likely 10% off in the first place.