Walkthrough
Just east of Five Isle Meadow is Memorial Pillar, a very small cemetery. A few Pokemon Trainers and Wild Pokemon can be found here, as well as a statue that stands in remembrance of an Onix.
Wild Pokemon
Grasses:
Hoppip (100%): Levels 6-16
Surfing:
Tentacool (65%): Levels 5-40
Hoppip (30%): Levels 5-15
Tentacruel (5%): Levels 35-40
Magikarp (100%): Level 5
Horsea(FireRed)/Krabby(LeafGreen) (80%): Levels 5-15
Magikarp (20%): Levels 5-15
Horsea(FireRed)/Krabby(LeafGreen) (40%): Levels 15-25
Qwilfish(FireRed)/Remoraid(LeafGreen) (40%): Levels 15-25
Gyarados (15%): Levels 15-25
Seadra(FireRed)/Kingler(LeafGreen) (4%): Levels 25-35
Psyduck(FireRed)/Slowpoke(LeafGreen) (1%): Levels 25-35
Pokemon Trainers
Bird Keeper Milo: Level 47 Pidgey, Level 49 Pidgeotto
Bird Keeper Chaz: Level 47 Spearow, Level 49 Fearow
Bird Keeper Harold: Level 47 Hoothoot, Level 49 Noctowl
Pokemon Trainers - VS Seeker Rematch
Bird Keep Milo: Level 53 Pidgeotto: Level 55 Pidgeot
Bird Keeper Chaz: Level 53 Fearow, Level 53 Fearow
Items
Metal Coat: On Ground
Razz Berry: ItemFinder
Sitrus Berry: ItemFinder
Bluk Berry: ItemFinder
TM42: Give Onix Statue A Lemonade