Ruins
In which Rats explore the historical record
Good time of the day, humans!
Transcript:
Cousin: — What’s this?
Rat: — Remains of an ancient cult. Humans once believed that following these would protect them from evil invisible spirits.
Cousin: — Did anyone actually return to tell the truth?
What if the legends of the will-o’-the-wisp are just echoes of an earlier civilization that perished following luminescent arrows?
I'll bet those tape arrows saved more lives than the masks and injectable products. A good laugh is often the best medicine.
A "will-o’-the-wisp" is just methane released by decay, and why the swamp seems to never run out of noxious gasses.