The Great Misfortune
The Original Incident.
Luckily, a curious Racer picked up some of the $SLIVER that The Supervolcano had vented across the landscape. They held it. They shook it. When they inspected the glowing shards, they felt a life force vibrate in sync with their own.
Was that Racer the first Scientist? We may never know. In any case, their intrepid experiments led to fantastic results: $SLIVER has many uses, chief among them its unique ability to calm The Supervolcano. Oh, and it powers the whole economy too.
These first $SLIVER gave hope to the remaining Original Racers, offering them sustenance through racing as they rebuilt their civilization. This all happened many, many, years ago.
Ever since, all Racers in The Racerverse have worked together to race and earn $SLIVER to learn more about their world.
While academics disagree about the exact origins of The Great Misfortune, there's consensus that an unusual alignment of The Three Moons, along with unknown factors, caused the eruption.
The Scientists think that as long as the amount of $SLIVER circulating in The Racerverse remains strong, there's no risk of The Supervolcano erupting again.
To be sure, certain Faction members make regular trips to The Supervolcano to toss in $SLIVER. Just in case. Because you never know.