Ricky Myran is a stunt devil that attempted to jump Poyahoga Gorge using a modified Corley motorcycle. He succeeded using many modifications and a stunt ramp. His accomplishment was later documented on a information board next to the Poyahoga Gorge Bridge.
According to the same book, his feat generated intense publicity, after which there was increasing demand for regulation of booster technology; the government responded by imposing strict limitations. Boosters were common only in outlaw gangs.
The Cavefish later stole Ricky Myran's stunt ramp, and kept it unsecured only partway into The Cave. It is possible that the ramp allowed the Cavefish to leap some chasm and access the inner cave. The Cavefish believed that his spirit was there with them.
After Ben Throttle's similar feat, there was a debate about whether the feat was something special, or rather a matter of appropriate equipment.