It's all very well speculating on what's going to happen based on the records of civilizations long since gone but what proof do we have of an actual disaster apart from the fabulous cities left behind in South America? The answer is Stonehenge.
If you're familiar with this ancient site in England you've probably read that it was built around 5,000 years ago and deliberately aligned to the summer solstice sunrise. The age is based on a handful of radiocarbon dated samples of animal bone from the ditch that surrounds the site, and a single sample from the foundations of one of the central stones, however, many other samples were discarded when they didn't fit the expected timeline. If we consider the relationship to the summer solstice sunrise, not only is it not aligned as such, it is the only relationship to any event. Now, when you consider that Stonehenge is a precise arrangement of seventy-five stones weighing from 7 to 45 tons, you might expect there to be more debris leftover from excavating the foundations (with antler picks?), and a whole lot more significance in the orientation.
The custodians of Stonehege, English Heritage, won't allow any scientific dating of the stones on site. Doesn't that seem a bit strange? You would think they would be more than happy to allow Optically Stimulated Luminance, which would tell us when the stones were assembled, or Chlorine-36, which would tell us when they were worked. But no, though there has been Chlorine-36 dating of a fragment of stone in a nearby museum which returned a date of 14,000 years. Instead, British archeologists continue with the idea that Stonehenge was built by an emerging agricultural nation as a temple to the dead, and try desperately to associate it with other piles of rock or earth in the area. In fact, every attempt to show how Stonehenge was built is an attempt to show how it could have been built by people with absolutely no knowledge of geometry, geology, astronomy, mechanics or stonemasonry.
Fortunately there is one aspect of Stonehenge which does give an idea of its true age. When the surrounding ditch was excavated to create an inner bank the excavated chalk and soil has protected the underlying bedrock from erosion to the extent it is 30cm (1 ft) higher than the exposed area. This feature, noted by emminent archeologist R. J. C. Atkinson in 1956, is not even mentioned in the extensive English Heritage sponsored re-examination of evidence at the site. Geologically it would take between 8,000-27,000 years for the bedrock to erode this much through the action of acidic rainwater. That's at least 3,000 years more than the archeological date and more in keeping with the Chlorine-36 result, which is itself around the time of the Younger Dryas event and possible cometary impact(s). But it is not so much the date of Stonehenge which is of concern here, it is the alignment.
At present Stonehenge is at latitude 51N and its axis of symmetry is northeast. As stated earlier, it aligns to nothing. Yes, yes, I know some of you will have read about it being at the optimum latitude for Celtic festivals, but we are talking about the 75 stones at the heart of the site and not two small stones on the bank! And as the astronomer Gerald Hawkins has demonstrated no amount of calculation produces alignments of any significance between the large central stones. However, turn the site so that its axis of symmetry points north and place it at latitude 45N and, suddenly, you have an astronomical clock capable of determining just about any solar or lunar event you care to mention (I will leave this part of the discussion here as it is too extensive).
My point is, what happened to move Stonehenge through an arc of some 600km (375 miles) after it was built 14,000 years ago? Or, more specifically, what shifted the Earth or its surface? And Stonehenge is not the only site to have moved - Newgrange in Ireland becomes correctly aligned north-south at the same time. Have there been other shifts? I've looked briefly at the possibility that sites in South America are more significant when aligned north - perhaps there has been more than one shift in the past 14,000 years?
http://www.stonehengeobservatory.comPlease note you will find citations to the facts contained above on the web site.