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Blimey, gotta love mother nature
- Thread starter Stat Brother
- Start date
Billy the Fish
Technocrat
That really is the arsehole of the world 
And the dirty bastard hasn't even bloody bothered to wipe it
And the dirty bastard hasn't even bloody bothered to wipe it
Gazwag
5 millionth post poster
when I saw that on the TV this morning I'm sure I saw this silver bloke on a surf board disappearing into the sky
beorhthelm
A. Virgo, Football Genius
- Jul 21, 2003
- 35,854
saw that this morning. have a bit of difficulty believing thats a natural phenomena since its so near perfectly round. theres also something else odd about the picture i cant put my fingure on .
The fact there doesn't seem to be any other damage?
The Wizard
Well-known member
- Jul 2, 2009
- 18,398
- Jul 7, 2003
- 47,501
What are sinkholes exactly? They had one in the Simpsons movie but I never quite worked out how what the are or how they work.
SurreySeagulls
Well-known member
Mechanisms of formation may include the gradual removal of slightly soluble bedrock (such as limestone) by percolating water, the collapse of a cave roof, or a lowering of the water table. Occasionally a sinkhole may exhibit a visible opening into a cave below. In the case of exceptionally large sinkholes, such as Cedar Sink at Mammoth Cave National Park, USA, a stream or river may be visible across its bottom flowing from one side to the other.
Sinkholes are common where the rock below the land surface is limestone, carbonate rock, salt beds, or rocks that can naturally be dissolved by circulating ground water. As the rock dissolves, spaces and caverns develop underground. These sinkholes can be dramatic because the surface land usually stays intact until there is not enough support. Then a sudden collapse of the land surface can occur.
Sinkholes can be human-induced. New sinkholes have been correlated to land-use practices, especially from ground-water pumping, construction, and development practices. Sinkholes can also form when natural water-drainage patterns are changed and new water-diversion systems are developed. Some sinkholes form when the land surface is changed, such as when industrial and runoff-storage ponds are created then the substantial weight of the new material can trigger an underground collapse of supporting material, thus causing a sinkhole.
Sinkholes are common where the rock below the land surface is limestone, carbonate rock, salt beds, or rocks that can naturally be dissolved by circulating ground water. As the rock dissolves, spaces and caverns develop underground. These sinkholes can be dramatic because the surface land usually stays intact until there is not enough support. Then a sudden collapse of the land surface can occur.
Sinkholes can be human-induced. New sinkholes have been correlated to land-use practices, especially from ground-water pumping, construction, and development practices. Sinkholes can also form when natural water-drainage patterns are changed and new water-diversion systems are developed. Some sinkholes form when the land surface is changed, such as when industrial and runoff-storage ponds are created then the substantial weight of the new material can trigger an underground collapse of supporting material, thus causing a sinkhole.
Barrel of Fun
Abort, retry, fail
Going back 12 years to my Geography A-Level, there are a number of potential causes.
It could be the collapse of a cave ceiling or the gradual erosion of material underneath, something relatively fragile like limestone or sandstone or it could be a change in the water table leading to cracking/fault lines.
Not forgetting to mention man-made intervention such as mining or drilling. Good luck to Primrose Hill and the Crossrail!
- Jul 7, 2003
- 47,501
Blimey, I did Geography A Level too. I must have switched off in the lesson on sinkholes 
It would be quite a fascinating experiment to have one appear in your garden. I'd be straight out there testing to see how much I could chuck in.
It would be quite a fascinating experiment to have one appear in your garden. I'd be straight out there testing to see how much I could chuck in.
Easy 10
Brain dead MUG SHEEP
Cor, imagine one of those opening up under Falmer.
That'd be a bit of a choker wouldn't it.
That'd be a bit of a choker wouldn't it.
Barrel of Fun
Abort, retry, fail
Didn't a sinkhole occur in the Woking pitch when Brighton played them last time or am I dreaming?
Don Quixote
Well-known member
- Nov 4, 2008
- 8,362
Right, hold on a minute here. I did Geography GCSE and I recieved a C grade. I think we know who is most qualified here.
WHAT THE f*** IS THAT SHIT MAN!?!??!?!?!?
WHAT THE f*** IS THAT SHIT MAN!?!??!?!?!?
ben andrews' girlfriend
Nurse Laura
It looks like someone's photoshopped that - it's incredible!
sir albion
New member
That is awsome
Nottseagull
Well-known member
They should use it as the set for a remake of Journey to the Centre of the Earth.
Bwian
Kiss my (_!_)
- Jul 14, 2003
- 15,898