The voices of the trees...you mean spirits? [The Brecilian Forest comes to mind, with its thin Veil and plethora of spirits crossing over as a consequence.] Are viera mages?

It seems unkind, to reject kin based on whether or not they wish to live elsewhere. Or even to speak with outsiders. Who set this law into place, and do all within the Wood follow it so strictly? Are none who remain within curious of what is beyond?

...forgive me, it must seem that I am passing judgment and that is not my place. I have difficulty understanding what it must take to lead such a life. The closest we have to that is probably the Dalish elves, but the sexes are integrated and they are not bound to one place, traveling constantly to keep Templars and other humans at bay.