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before she destroyed the floor and replaced it and a new face promptly appeared. More and more faces continued to appear on the floor of Maria Pereira39。 to the Interdimensional Hypothesis, where alien UFOs are crossing the fabric of spacetime from a parallel universe. Meanwhile, UFO conspiracy theories center around Area 51 in Nevada, about 90 miles north of Las Vegas. The site houses a large air base that was selected in the 1950s for testing of a U2 spy plane. It has since bee America39。s starred in his own TV show. Bigfoot is worldfamous for spooking the bejesus out of hikers and hunters in North America. Scientists consider Sasquatch to be the result of folklore, misidentification and a whole lot of hoaxes. However, some people believe many of these humanoid creatures exist around the world, just like the Yeti of the Himalayas. Bigfoot has been described as an apelike creature, some 610 feet tall, weighing more than 500 pounds, and covered in dark brown or reddish hair. Witnesses give him large eyes, a heavy brow ridge and a crested head, much like a male gorilla. Footprints allegedly belonging to Bigfoot are 24 inches long. Is Sasquatch really one of the great unexplained mysteries of the world? Somewhat disappointingly, the most famous footage of Bigfoot at Bluff Creek, California, was shot down by a man called Bob Heironimus. Years after the event, he claimed he wore an ape costume for the filming (photo, right). Scientists also point out there is slim chance that a prehistoric, bipedal, apelike creature could exist, simply because the breeding population of such an animal would have to be so large that many more sightings would be reported. Nevertheless, Bigfoot39。s big, he39。Top 10 Unexplained Mysteries of the World Unexplained Mysteries of The World: 1 Crop Circles The original crop circles were exactly that circular patterns of flattened crops, often created in mysterious circumstances overnight. During the last 20 years, though, crop circles have evolved into plex geometric shapes, like the DNA double helix or the nautilus shell. In 1966, an Australian sugar cane farmer said he saw a saucershaped spaceship rise up from a swamp before flying away. When he looked at the landing site, he found the reeds intricately woven in a clockwise direction on top of the water. There are many other anecdotal accounts of crop circles appearing in alien UFO literature, where sometimes the crops were burnt, otherwise flattened. But in 1991, two men from Southampton, England, admitted they conceived the whole idea as a prank some 15 years earlier. They made their masterpiece using planks, rope, hats and wire and could create a 40foot circle in 15 minutes. The only reason they came clean was because one of the men, Bower, was running up considerable mileage on his car and had to convince his wife he wasn39。t having an affair. He continues to demonstrate the art today. Unexplained Mysteries of The