Very nice! The how did you get the moss to grow so thick on the back wall?
http://www.dendroboard.com/coppermine/albums/userpics/10275/normal_1side.jpg
http://www.dendroboard.com/coppermine/albums/userpics/10275/normal_1ferns2.jpg
http://www.dendroboard.com/coppermine/albums/userpics/10275/normal_1side.jpg
http://www.dendroboard.com/coppermine/albums/userpics/10275/normal_1ferns2.jpg