The Great Snow Maze was a members only event in November 2009. (although there was a free item at the Mountain for everyone, including nonmembers) The entrance to this maze was located in the Ski Village. If you completed this maze, you would be taken to a secret room and receive a free Yeti Costume.
I completely forgot about that party!!
I joined in 2005 and went to 2009 and never about that party