There was a Dr who episode with this plot, but the insect inside the earth was a spider.

Insect + big + magic as caulking for the highest-level plot holes, then let the geopolitics trickle down.

Bam. World created.

This year they came out in droves, to the point where their sound was ear-splitting and drowned out most of the cars on the major road I live on. The sound is one of the worst things I have ever heard (intense bug phobia)… so yeah, fuck everything about this.

Isn’t this just Chrono Trigger?

In DnD I believe it is called a Tarrasaque