Made this for an planned story.  At the center are crystals, but underneath them is a trove of ZPMs.  The only problem is finding the thing.  Best way to determine the center is to fly a UAV over it and give the teams a map to try to navigate their way through an overgrown hedge maze with only one avenue to the temple in the center.  Surrounding this maze is a forest of tall trees, putting this maze in the near dark.

Temple Maze

Temple Maze