Couldnt this have all been solved with a fence?
I mean, after the 2nd tourist walked into the “fog” a fence with a sign might have helped.
In multiple languages:
Toxic radiation: keep out.
Warning: poison gas leak.
Keep out: Rabid dogs.
A red velvet rope would have at least been a start. Make an effort people! Even an old well is blocked off so little Timmy doesn’t fall in.