identify this tv show - Video in which a man follows a string all his life to end in the desert

I am looking for the video where a young man stumbles upon a string (or cable) and begins to follow it, out of curiosity. He follows it a really long time as you can see him age and grow old.
At the end he reaches a point where the string stops to go up in the sky, in the middle of the desert. He pulls it and a big rock attached to the string crashes him dead.

This video is only a few minutes long and might be a commercial if I remember well.

Also, is there some kind of mythological or hidden meaning?

Answer

This is most likely the short called "The String" (2007) directed by Naomi Wright and produced by Ginita Jimenez.