The team searches the massive tunnel, but with the valley on the verge of flooding, they're forced to put their lives at risk. Their risk pays off big, placing them on the threshold of solving the 300-year old Sacambaya mystery.
By entering your email address, you agree to our Terms of Use and acknowledge the Privacy Policy. discovery and its affiliates may use your email address to provide updates, ads, and offers.
To withdraw your consent or learn more about your rights, see the Privacy Policy.