Mysterious Crop Circle HD - Mystery Documentary

A crop circle is a sizable pattern created by the flattening of a crop such as wheat, barley, rye, maize, or rapeseed. Crop circles are also referred to as crop formations because they are not always circular in shape. The documented cases have substantially increased from the 1970s to current times, and many self-styled experts allege an alien origin. However, in 1991, two hoaxers, Bower and Chorley, claimed authorship of many circles throughout England after one of their circles was certified as impossible to be made by a man by a notable circle investigator in front of journalists.
Circles in the United Kingdom are not spread randomly across the landscape, but they appear near roads, areas of medium to dense population, and cultural heritage monuments, such as Stonehenge or Avebury, and always in areas of easy access. Archeological remains can cause cropmarks in the fields in the shapes of circles and squares, but they do not appear overnight, and they are always in the same places every year.
The scientific consensus is that most or all crop circles are man-made, with a few possible exceptions due to meteorological or other natural phenomena.

Mysterious Crop Circle

The concept of crop circles began with the original late-1970s hoaxes by Doug Bower and Dave Chorley. They said that they were inspired by the Tully "saucer nest" case in Australia, where a farmer found a flattened circle of swamp reeds after observing a UFO. Since the 1960s, there had been a surge of UFOlogists in Wiltshire, and there were rumours of "saucer nests" appearing in the area, but they were never photographed. There are other pre-1970s reports of circular formations, especially in Australia and Canada, but they were always simple circles, which could have been caused by whirlwinds. In Fortean Times David Wood reported that in 1940 he had already made crop circles using ropes near Gloucestershire. In 1997, the Oxford English Dictionary recorded the earliest usage of the term "crop circles" in a 1988 issue of Journal of Meteorology, referring to a BBC film. The coining of the term "crop circle" is attributed to Colin Andrews in the late 1970s / early 1980s.
In 1686, British scientist Robert Plot reported on fairy rings in his The Natural History of Stafford-Shire and said they could be caused by airflows from the sky. In 1991 meteorologist Terence Meaden linked this report with modern crop circles, a claim that has been compared with Erich von Däniken's pseudohistoric claims. 
An 1880 letter to the editor of Nature by amateur scientist John Rand Capron describes how a recent storm had created several circles of flattened crops in a field.
In the 1960s, in Tully, Queensland, Australia, and in Canada, there were many reports of UFO sightings and circular formations in swamp reeds and sugar cane fields. For example, on 8 August 1967, three circles were found in a field in Duhamel, Alberta, Canada, and the Department of National Defence sent two investigators, who concluded that it was artificially made but couldn't make definite conclusions on who made them or how. The most famous case is the 1966 Tully "saucer nest", when a farmer said he witnessed a saucer-shaped craft rise 30 or 40 feet (12 m) up from a swamp and then fly away. When he went to investigate the location where he thought the saucer had landed, he found a nearly circular area 32 feet long by 25 feet wide where the grass was flattened in clockwise curves to water level within the circle, and the reeds had been uprooted from the mud. The local police officer, the Royal Australian Air Force, and the University of Queensland concluded that it was most probably caused by natural causes, like a down draught, a willy-willy (dust devil), or a waterspout. In 1973, G.J. Odgers, Director of Public Relations, Department of Defence (Air Office), wrote to a journalist that the "saucer" was probably debris lifted by the causing willy-willy. Hoaxers Bower and Chorley said they were inspired by this case to start making the modern crop circles that appear today.