How does quicksand work?

Quicksand doesn’t work by pulling you down.

Quicksand is nearly always found above a spring, which creates a supersaturated condition that makes the sand frictionless and unable to support weight.

In addition, quicksand is airless, which creates suction as you struggle to get free.

The most effective way to escape quicksand is to position yourself on top of it and “roll” out.