And while there is evidencethat prehistoric tribes roamed at the Great Lakesfor thousands...
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And while there is evidence
that prehistoric tribes roamed at the Great Lakes
for thousands of years, very little is known about them
that prehistoric tribes roamed at the Great Lakes
for thousands of years, very little is known about them
Full Transcript
00:00:01.000 --> 00:00:03.084
And while there is evidence
that prehistoric tribes
00:00:03.092 --> 00:00:07.004
roamed at the Great Lakes
for thousands of years,
00:00:07.012 --> 00:00:08.088
very little is known about them.
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Movie Summary
Using cutting-edge technologies such as ground penetrating radar (GPR), LIDAR (Light Detection and Ranging), and 3-D imaging, scientists research fascinating underworlds of secret tunnel networks, ancient structures, and bizarre g...
