In Weeping Waterfall stage ([screenshot of menu][1]), right about here:

![http://img521.imageshack.us/img521/3764/imag0128p.jpg][2]

there is a secret on the ground near the trees, which looks like several concentric squares when viewed in first-person view:

![enter image description here][3]

I cannot for the life of me figure it out, can anyone shed some light on it please?


  [1]: https://i.sstatic.net/AkHS4.jpg
  [2]: https://i.sstatic.net/FY1WO.jpg
  [3]: https://i.sstatic.net/mQIxC.jpg