I'm currently in the Gold Key Maze and I found the gold key. I also mapped out the entire thing on graph paper and discovered the false walls. It seems that there are two rooms that I cannot get into. One kinda in the middle with a few stone walls as well as non-false wood walls. The other is 1x5 section running along the center-east side. I've gone around both of these tapping and hacking and have not found any way inside either. It is too suspiciously "room like" to just be a dead area.
Is there anything more I need from this maze beside the key? I've now moved onto the Red Key Maze, but I would hate to have missed anything in the Gold Key Maze.