While a railcar of a similar nature currently exists in Valua, this flying train is believed to have once carried passengers between the lands of the Red, Green, and Purple Moons. Although no more passengers board, the Sky train carries on.
The Sky Train is a discovery in Skies of Arcadia Legends. It moves over a large area, making it hard to find much like Flutterflies and the Rolling Stone. The Purple Moon Crystal is required to find it. The easiest way to locate this discovery is to position yourself above the cloud ceiling, almost directly above the Temple of Pyrynn, where the Red Moon Crystal is found. Save your game and reload this file, then head immediately south until you see it. You have to be quick, though, as this discovery moves almost as quickly as the Delphinus at full speed.