You have 20/20 vision if you can spot THIRTEEN faces in this optical illusion in under ten seconds

Titled The Forest Has Eyes, there are 13 pairs of eyes and full faces hidden among the trees and rocks.

Don't be too sure of your skills if you quickly spotted the first four faces in the middle of the picture.

The faces stand out due to their size as they are considerably bigger than the others.

Among the rocks, there are two faces to the left of the picture, one at the bottom, and a third to the right of the two horses.

To see two more, cast your eyes to the right of the picture across from the face at the bottom.

There are two green faces next to each other made up of rocks and grass.

If you are struggling, some people find optical illusions easier to solve by holding the picture further away or by squinting their eyes.

Then, if you look closely at the treeline at the back you will see four faces in a row.

It's easiest to keep an eye out for their noses and eyes.

Finally, the last three faces are much trickier to spot as they are smaller and made up of other faces and thin parts of the trees.

If you cast your eyes back to the row of trees in the upper section of the painting you will see a smaller face just squeezed into the painting.

Then look at the white horse and move your eyes across to the left -here you will see another face.

Lastly, you need to look to the right of the picture where you can see the spindly white lines of empty branches.

These branches all twist together to make the outline of a face.

If you enjoyed that, why not find out more about your personality with this word search?

Or, test your vision by seeing how quickly you can spot the bird that caught the worm.