ref: eec15bd7fa5ac611e33e53a0b603b73338db474f
dir: /data/maps/headers/Route21.asm/
map_header Route21, ROUTE_21, OVERWORLD, NORTH | SOUTH connection north, PalletTown, PALLET_TOWN, 0 connection south, CinnabarIsland, CINNABAR_ISLAND, 0 end_map_header