The coiling serpent motif buit into the earth in Pleasant Hill, Ohio, can only be seen from the air. What is so important about this site and why did primitive people want to send messages to above?
About Ancient Aliens
Ancient Aliens explores the tantalising mystery of whether aliens travelling in UFOs may have been visiting our planet for millions of years. In this series, ancient cave drawings of strange creatures and continued mass sightings in the USA provide yet more evidence that extra terrestrials may be among us.
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