I would call it a cave in.
Collapsed caves are often referred to as sinkholes. This occurs when the roof of a cave collapses, creating a depression or hole on the surface. Sinkholes can pose dangers to infrastructure and properties located above them.
At the center of a black hole is a mass that has collapsed to an infinitely dense point.
The antarctic hole is the ozone hole. It is caused by the CFC's.
For the explorers this was proof that at one time, nearly 65,000 years ago, when the world was in the grip of the last major ice age, the sea level of the Bahamas was up to 150 metres lower than it is today. Over time the limestone of the islands was eroded by water and vast cave networks created. When sea levels rose again about 10,000 years ago some of these collapsed inwards and the Blue Holes were formed.
A sinkhole.
it's a cave that collapsed !
Collapsed caves are often referred to as sinkholes. This occurs when the roof of a cave collapses, creating a depression or hole on the surface. Sinkholes can pose dangers to infrastructure and properties located above them.
If the Sun collapsed into a black hole, it would be about 3 kilometers in diameter.
Yes. A black hole is a collapsed star.
At the center of a black hole is a mass that has collapsed to an infinitely dense point.
A black hole is a star that has collapsed into a tiny point known as a singularity.
A black hole.
Black holes are the result of a large star that has collapsed.
A caldera
BLACK HOLE The answer to your question is BLACK HOLE. I just did something on this. Hope this helped! :)
Ozone hole is caused by CFC's. It is caused on PSC's.
There isn't one. It depends on how much matter the collapsed star (black hole) has gathered.