World's Largest Drain Hole. - Neatorama

Fogonazos has a neat story about the largest drainhole in the world: a spillway at the Monticello Dam in northern California. Link

I disagree. It doesn't exist now, but Lake Peigneur at one time had the biggest drain hole.

http://earthdude1.tripod.com/texaco/texaco.html

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OK then, how about World's Largest Deliberately-Made Drain-Hole That Didn't Suck An Entire Lake Into A Salt Mine, Wreaking Massive Havoc And Completely Altering The Local Ecosystem...? :-)

--TwoDragons

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They call it a "glory hole"

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That would be kind of scary to fall down in.

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I actually think this glory hole in Northern California is bigger. You can compare it to the roadway and it seems larger. I'm not sure how often it actually drains though. http://virtualguidebooks.com/NorthCalif/NorthCoastRanges/Whiskeytown/GloryHoleWhiskeytown_FS.html

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There is a map in Half-life 1 who looks excactly like this.

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I wonder if you fell into that thing while it was draining if you'd survive. There aren't any turbines to chop you up or grates to Play-Dough Fun Factory you to death. You'd just need to hold your breath and maybe wear a helmet. Not that I'm going to volunteer to take the plunge, mind you.

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Ok, so to reasure the children I have always said "you can't fit down the drain hole" Now I can say, "But if your bad...." Hee,hee...

And I love the play-dough fun factory you to death comment...too vivid! :)

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It needs "goatse" hands...

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Yikes! Terrifying!

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I've stood next to the one at Harriman Dam in Vermont. It was very scarry. I can imagine how a spider feels getting washed down the tub drain.

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Excuse my ignorance on the subject but where does it drain into?
Its been unusually wet over here (in Soggy Scotland) this year so I may have answered my own question.
Perhaps there is a subterranean continent which has also experienced the worst flooding in memory.
Could'nt you Americans with all your technology send a probe, with camera to investigate?

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It just drains out the other side of the dam. Follow the link and you'll see people using the horizontal part as a skate board park during the dry season.

Now that I think of it, my neighbor's man made swimming pond operates on a similar, albeit many times smaller, principle.

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