This is the entrance to the underground cemetery in Nagcarlan, Laguna. A historical site for it has played its part during the meetings of the Katipunan during the Spanish times.
The photo is a composite of two images taken at slightly different angles to produce a 3D cross-eye photo.
To fully appreciate the image, just cross your eyes and slowly merge your vision to produce a blended three-dimensional image in the middle. Remember those “Magic Eye Puzzles”? That’s how you do it.
If you’re having a difficult time seeing it, just leave a comment and I’ll give you more tips on how to see this 3D photo.