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UNKNOWN DIMENSIONS: Could the elusive Bigfoot be using infrasonic vocalizations?

Sam Uptegrove has been fascinated with the unexplained since childhood. He began actively investigating paranormal incidents in his late teens and has continued for more than four decades. Now retired and a cancer survivor, he has lived in the southwest M
Posted 9/25/15

Recently, a member of one of the Facebook groups I am a member of, — Evidence of Tennessee Bigfoot —posted a comment concerning the concept of Bigfoot utilizing sounds below the range of human …

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