Quicksand isn't something that only happens in movies — it happened to two real men in the past three months, in places that looked completely ordinary. We follow Austin Dirks, an experienced thru-hiker trapped knee-deep in freezing sand in Arches National Park, and Andrew Giddens, who spent days invisible and shoulder-deep in a Florida mud pit before anyone found him. The difference between 2 hours and 6 days comes down to one device.