I was just scrolling and saw a video of a sink-hole forming and just swallowing a rather large area of water/grass. Like all of us I’ve seen photos of the gaping holes in cities etc.
But how do they work? Why do they form? Where did all the mass that was there before them go? Where does the stuff they swallow go? Mass can’t just disappear.
In: 5
If there’s a void underneath (sometimes natural and the loading on top can become too heavy, or from say tunnelling activities) or something has happened to mean the soil and water pressure up is way less than the gravity pulling it down, sinkhole.
But also, not sure if you saw the same video I saw with the grass and water where it was entering two locations close together? That wasn’t actually a sinkhole like the post was labelled, it was a drainage culvert. There was a flood and the water was rushing into that big big drainage pipe. No sinkhole, but it’s going to be a nightmare to unclog after the flooding stops!
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