You can not sink in quicksand

This is nothing more than a cinematic myth: man steps into quicksand, the sand begins to sink under it, and it does not stop as long as the hero will be buried under the sand completely. In fact this does not happen. At least, not so fast.

Quicksand consist of a combination of sand, water, mud and salt. These components form a structure resembling a house of cards. While he touched, everything remains stable, but if you will step back, everything comes into motion and begins to tighten deeper. It will happen, as long as you do not lose yourself to about halfway, and then the sand "tamp" around you, there will be dense enough not to allow your body to continue to dive. And though it will not mean that you do not fall into the deadly trap, stuck halfway in the sand, at least get caught completely does not threaten you.

via factroom.ru