**Geomyth** is the term used in the book *Mythopedia* to refer to mythical tellings of real-world events that have been passed down by word of mouth, generationally. There's dozens of examples given in the source.
General prototypical example:
- Evil mountains that swallow whole villages → was a volcano that erupted 400+ years ago
****
# More
## Source
- Mythopedia by Adrienne Mavor