The small land area of Route 19 to the north of the sea has not always been a dependency of Fuchsia City. In the Sengoku era it was home to a tall castle constructed and dominated by a colony of Kingler. Architecturally it was a series of interlocking step pyramids surrounding the valley below; a poor use of space, to be sure, but the Kingler's weak reach, and lack of climbing equipment offered them no better options.
The strange territory's roots are shrouded in mystery: some ascribe it to an eccentric trainer of the era who did live in the area and have a strong bond with his Kingler, but evidence of him ever owning a castle is scant and he is believed to have had pokemon like Machoke in his lineup. Others claim it was established as a forward base by Articuno and the pokemon of Seafoam Island, and there is evidence of temporary alliances and trade between Seafoam and the castle. This scenario, however, does not account for the dominance of Kingler in the territory: Kingler were but one of many pokemon in the area, and seldom an influential one.
The castle stood for centuries, eliminated only when the ninja of Fuchsia City had gained cannon and gunpowder from their trade networks and ceased their constant clan warfare. When they finally triumphed, they slaughtered with the special fury of humans exerting dominion over nature. They made a desert of the castle's central village: even today, there are neither humans nor pokemon which call that beach home.