From Bulbapedia, the community-driven Pokémon encyclopedia.
Silver Falls (Japanese: シルバーフォール Silver Falls) is a location in Pokémon Ranger: Guardian Signs.
It is located west of Sophian Road and south of Oblivia Ruins on Sophian Island and is only accessible by riding Suicune. To access this point, the player must use Suicune's special 'Water walking' skill and jump over attacking Carvanha. While going to the Falls, the player encounters a Blastoise and a hidden Lotad on a small island.