Spring Path is a place in Route 214 that can only be found if you have your National Dex. However, in Pokémon Platinum, the player may use this path to get back after escaping the Distortion World. If you keep walking you will be in Sendoff Spring, which is where Turnback Cave is, which is home to many high-leveled and/or rare Pokémon including the legendary Pokémon, Giratina.