Initially, this was a four-man dungeon, including Marcus and Loft from Quill, and Relerin from Ultra5, but due to issues all but Holle Dagdon were removed. Link to thread: http://forums.hyrulecastle.org/index.php?threads/forest-temple-ultra5-quill-eternis-oot.1181/
Normally, Quest Bureau threads aren't used for Classic Dungeons--but eh. It took more than three years, and as such is probably the longest-running completed dungeon on Hyrule Castle. It started with three players and ended with one. It involved Ganon(dorf), but Classic Dungeons are generally assumed to be not canon for that reason. All that said, there's no legitimate reason to fail this, so *stamp* approved. Enjoy your Magic Bolt + 10 rupees.