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What is a sinkhole and how does it happen?

Heard something about it on the news and a guy but didn't have time to watch the news.

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It's when the ground becomes hollow due to erosion and when the thin top covering over the big hole collapses, you get a sinkhole

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I see. Thanks!
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That poor guy in Florida was just swallowed up by the sink hole..His bed and all..
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Ya. It's sad.
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It's like a think that's in the ground and it usually on the roads or in a field but they just callaps in and then you fall in it if you were on top of it or whatever was on top of it .. It's really scary I saw that in the news . :(

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Ya it's sad. I think they said they still can't find his body.
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Oh and thank you.
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It usually happens when ground water is drawn out, and leaves a big empty hole under ground, and then it caves in

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Oh ok thank you.
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a sink hole were the groun gives away and opens up

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Thanks
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Sinkholes are depressions that occur when soil or bedrock has been removed and only air remains -commonly when the rock below the land surface is limestone carbonate rock or salt.Beds that have been naturally dissolved by ground water circulating through them and then the water dries up.

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Before the sink hole forms, the surface will look fine. But it could be egg-shell thin since nature has been hard at work using water to move the solid material to someplace else.

Some of the news articles & photographs on the web involve bizarre cases of sinkholes swallowing a city block, a huge chunk of forest, or an SUV that seems to have fallen a full story into the hole that was a city street a second ago. Lots of weird sink hole pictures on the internet. Truly, truly bizarre effect of erosion at work.

I guess it's technically erosion underneath the ground that we don't notice until the hole finishes "digging up" or something heavy or forceful finishes the job in one fell swoop. I can think of a few ways things can erode above ground, but I can only think of water eroding things beneath ground, there may be more though.

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It is a hole under ground that is made of normally limestone that gives way with too much pressure on it. Dont walk and text, if you remember that story!
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sorry, i clicked on comment!
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not answer
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That's ok. Thanks to both of you. :)
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its kinda like quik sand but usualy created by a under ground tunnel collapsing

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Good way of putting it. Thanks.
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It happens when the ground hollows out, and then collapses onto it's self, pulling everything into the ground with it.

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(Underneth the top layer of soil)
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Ooh ok. Thank You.
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welcome
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When repairing your sidewalk with concrete..DO NOT LET THEM THROW IN THE OLD CONCRETE W THE SAND... It will eventually wash out and create a sink hole...

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Never thought of something like that. Thanks!
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it is when water enters a hole and the top gets covered, then the water dries out making a hole in the ground then it will collapse and create a sink hole

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Thanks you!
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