I always wander on maps and i get a few pokemons from the Waterfall and Dark cave. The seems to be entrances like a ladder but when i go to that ladder, i dont get anywhere. And in waterfalls, there's a tunnel like entrance but i can't get through. In Palm Beach too,there is a stair leading down but cant walk on it. What should i do to pass through em?

I guess you cant pass them at the moment. As far as i know, Only the ladder in ice cave can be passed. Dark cave's ladder is useless and the 2nd cave in Waterfall cannot be entered. (only the first one which you'll find when you just enter the map)

thats all i know about the maps. :)

Okay. Thank you. I just thought i need to purchase a bicycle which is very expensive to pass through em, and glad i didn't.