The Rail Canyon Zone is a location that appears in the Sonic the Hedgehog comic series and its spin-offs published by Archie Comics. It is a deserted canyon region on Sonic's World where the Eggman Empire keeps some of its train station outposts.
Shattered World Crisis
After the Badnik Horde captured Uncle Chuck and Professor Dillon Pickle, the professors and their research were brought on a Bullet Train heading for the Rail Canyon Zone for to be picked up. When it arrived at the Bullet Station though, all Dr. Eggman got was the Gaia Manuscripts due to the Freedom Fighters's intervention.