You are travelling along a road, minding your own business, when suddenly the earth opens up in front of you and you and everybody in your car with you, and your car, are sucked into a gaping terrifying hole many feet wide and many feet deep !!!! One could have recurring nightmares about such a scenario. Apparently these terrifying holes can occur anywhere, any time and there is not a lot that anybody can do about preventing such occurrences !

Perhaps the following documentary may help explain this frightening phenomena, or make you feel even more worried ! ..........................