[wlesieutre]

For anyone not familiar, this is an effect where if you load wet soil just right it will break the structure of the soil grains and turn into a fluid. Demo here, you can skip the first minute if you're short on time: https://www.youtube.com/watch?v=-X9-4tWpMCo

Wikipedia has more information and some good photos: https://en.wikipedia.org/wiki/Soil_liquefaction

It's a really cool and equally terrifying phenomenon if you're used to thinking of the ground as a solid object. Plenty of videos on YouTube as well.

EDIT- Here's a car that sunk into the ground, which then resolidified around it: https://youtu.be/2WoKu5VxKgs?t=50

http://izismile.com/2012/08/31/christchurch_liquefaction_26_...