His words end in a squawk. Jon's arms fling up, elbows stiff, fingers splayed. I hear the dread word: "Quicksand!" Quicksand is odd: a bed of silt becomes saturated with water so that its grains ...

Getty Quicksand is not like it appears in the movies. The mixture — which is a combination of sand and water, according to Scientific American — typically occurs in areas near water ...