High-tech laser scans uncover hidden military traverse at Alcatraz Island
High-tech radar and laser scans have uncovered a hidden military traverse underneath the infamous Alcatraz penitentiary.
from Odd Creatures News -- ScienceDaily https://ift.tt/2TdpDRN
from Odd Creatures News -- ScienceDaily https://ift.tt/2TdpDRN
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