The Barmalindar forest is open for exploration, although it's a bit lacking in detail right now.
To get there, go to the Park NW, go as far west as you can, and exit to Parkside Lane. Take that south to Elvenhome Road. Take that west as far as you can -- it's a looooooonnnngggg walk -- then go north on Westgate Road. The forest is a couple of moves north.
I've noticed a large treehouse, #1, Laurelin, inside the forest. I have to admit that I've been trying to get inside of it for some time, without luck. is there any information regarding this place? Is it owned by someone?