Originally posted by Jaggid Edje:

At this point I've considered using dev command to trigger one just to see how well the walls work (if there even is such a command, though I assume there is).

https://valheim.fandom.com/wiki/Console_Commands#Cheat_Commands

https://valheim.fandom.com/wiki/Events

Let us know how it goes if you're willing to give them a try...