They have Pokemon behind them, but to open them you have to complete missions on ranger net ( their not legends or special Pokemon just ordinary ones.)
When the respective bosses are beaten in the past missions, the slates will crumble.
after Celebi sends you into the past for a third time you can do "multiplayer" missions in the past (you can do them alone but with a friend is faster also the missions have a time limit), some of these missions involve battling the Pokemon on the slates and when you beat them and go back to the future the slates will break opening a the path for you.
dude if u ever get one plz mail me at it plz id : pokemon.freak44@yahoo.com
fall city is unt in Pokemon ranger guardian signs
its for unlocking new partners in multiplayer mode
latias is in Pokemon ranger signs.
do quests and catch legendary Pokemon to get signs
they are slates if you go in to the past using the stone of time in cocona village after you beat celebi you can do missions eg:if you defeat drapion in the past when you tap the stone slate with the Pokemon you defeated in the past it will open and there would be a Pokemon in the room behind it
Honestly, I'm not sure. But I think you get S ranking, and you hope to get lucky. That's what I did and I got Vileplume and Sceptile.
you can not
Pokémon Ranger: Guardian Signs (Part One) and Pokémon Ranger: Guardian Signs (Part Two) or SS022 and SS023
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