Stereoscopy: Winter forest

This is NOT a stock.

It is a stereoscopic image. To see it in 3D, view it cross-eyed.

1. Squint till you see 4 blurry images.
2. Let them move back till the middle ones merge and you see only 3 instead of 4.
3. Calmly focus on the middle one.
4. Enjoy what you see!

Just discovered the technique yesterday so I had to try it at once. It's applicable to paintings too but photos are better.
If your eyes hurt, have a rest.