I think that there was an interview that mentioned that this song was based on one of the legends about an actual well in either Scotland or Ireland, I don't remember which at the moment.
The way I choose to interpret it is that a woman cast a wish on this well and was trapped by it. She haunts the area, wishing for someone to release her from the forest.
I think the last verse is saying that casting a foolish or selfish wish on the well will give the wisher the same result as the woman.
I think that there was an interview that mentioned that this song was based on one of the legends about an actual well in either Scotland or Ireland, I don't remember which at the moment.
The way I choose to interpret it is that a woman cast a wish on this well and was trapped by it. She haunts the area, wishing for someone to release her from the forest.
I think the last verse is saying that casting a foolish or selfish wish on the well will give the wisher the same result as the woman.