Quote:
Baavgai explains:
We live here to make amends for our sins. In the past, having grown drunk off its own greed, our tribe embarked on a mission to subjugate all that it possibly could.
In response to our insatiable greed, the gods punished the Uyagir by unleashing giant, oliphant-like beetles upon our lands.
The beetles left absolute devastation in their wake. Rivers dried up, crops wilted and cavernous holes were dug in the southern deserts.
Our ancestors, faced with the result of their avarice, swore to repent for their mistakes. They chose to live in the caves bored by the giant insects and abandon all greed.
It's a little ambiguous whether they are currently living in the bored caves though, or if they moved out into different caves later. But the world map does have a drawing of a giant worm (beetle larva) in the Burn, so that part seems to add up.