It takes an obsessive mind to spend 15 years traveling and searching the Ohio Valley to document more than 700 ancient burial mounds. Our guest, Fritz Zimmerman, is an expert on the ancient mound builders that lived in North America. Where did these ancient peoples come from? What are in these giant mounds? 
Fritz Zimmerman: https://www.amazon.com/Fritz-Zimmerman/e/B003NMPNHW%3Fref=dbs_a_mng_rwt_scns_share
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Music Kyle Monroe: tinytaperoom.com 
Aaron Green: https://www.instagram.com/aaronkgreen/ 
Outro Song: TimeCop1983: timecop1983.com