From earthfirst.com:

Droughts. Hurricanes. Floods. Monsoons. Disappearing coastlines. These are just a few of the weather effects we’re currently experiencing and will see more of in the future, courtesy of global warming. And they aren’t pretty – they lead to destruction, injury and the death of millions of people, not to mention the effects on the earth’s ecosystems. Scientists are noting more weather disturbances than ever, and it’s only going to get worse. Right now, in seven places across the globe, people are already dealing with the frightening effects of global warming, from India to Alaska. It’s a foreboding sign of what may be to come for the entire world as we battle global warming and experience its full effects.

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environment, global warming, geography

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These holes are not only amazing, but some of them are really terrifying! The sheer magnitude of these gaping holes reminds us of how men will scar the earth to pursue their quest for power and wealth.

Apparently the largest ever hand-dug excavation in the world, this 1097 meter deep mine yielded over 3 tons of diamonds before being closed in 1914. More Info – Wiki Link

A glory hole is used when a dam is at full capacity and water needs to be drained from the reservoir. This is the ‘Glory Hole’ at Monticello dam, and it’s the largest in the world of this type of spillway, its size enabling it to consume 14,400 cubic feet of water every second.

This is supposedly the largest man-made excavation on earth. Extraction began in 1863 and still continues today, the pit increasing in size constantly. In its current state the hole is miles deep and 2.5 miles wide.

This incredible geographical phenomenon known as a blue hole is situated 60 miles off the mainland of Belize. There are numerous blue holes around the world,
but none as stunning as this one.

I’m pretty sure most people have seen this one. It’s an absolute beast and holds the title of largest
open diamond mines in the world. At 525 meters deep, with a top diameter of 1200 meters, there’s
even a no-fly zone above the hole due to a few helicopters having been sucked in.

The mine is so huge and the area so remote that it has its own airport with a runway large enough to accommodate a Boeing 737. It looks equally cool when the surrounding water is frozen.

These photos are of a sinkhole that occurred early this year in Guatemala . The hole swallowed a dozen homes and killed at least 3 people.

That’s all the holes we’ve got for you. Know of any others? Tell us about them in the comments.

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From the Site:

Long ago, our ancestors were using caves as shelter from wild animals and the forces of nature. Perhaps, this base necessity however, has always been eclipsed by man’s curiosity and desire to explore the mystical and enigmatic air inside the abyss. In the past, Environmental Graffiti has explored some amazing uses of caves – from discotheques, temples and underground cities to hotels and primary schools. That’s only scratching at the surface however. Today, with all sorts of equipment, caving has turned into something of an extreme sport – it involves climbing, crawling and sometimes even swimming. Looking at the most extreme end then, what about those caves that create the enigma, that fuel the stuff of legends; caves that appear bottomless and that seem to extend to the very center of the earth? What are the ten deepest caves on our planet?

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