Sentinels of Silence
A helicopter soars above Mexico's ancient ruins, providing a stunning aerial view of a long-lost civilization.

A helicopter soars above Mexico's ancient ruins, providing a stunning aerial view of a long-lost civilization.
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Studio(s): Paramount Pictures, Producciones Concord
Originally Released: United States, May 01, 1971
Production Countries: Mexico, United States
Genres:Documentary, Short