Between the states of Chihuahua, Durango and Coahuila in Mexico there is a mysterious area of land that has numerous legends and mythos associated with it. It's called La Zone del silencio or The Zone of silence in English, some refer to it as The Mapimí Silent Zone.
The area called "El Bolsón de Mapimí ", is a closed basin covering a great part of the Chihuahuan Desert: an immense arid zone that extends from the Sierra Madre Occidental to the East, and from south to north extends from the Mexican states of Zacatecas, San Luis Potosi and Hidalgo, to Durango, Nuevo Leon, Tamaulipas, Coahuila and Chihuahua, and extends to the United States covering Texas, Arizona and New Mexico, reaching the Rocky Mountains.
Radio waves do not propagate normally in the area, anomalous magnetic properties are attributed to the zone of silence which has resulted in a phenomena of absolute radio silence, even if both the sender and receiver are located only a couple of feet away. Curiously the mysterious phenomena does not occur in the entire area of the zone, but only in certain places.
In prehistoric times this large piece of land was submerged under the waters of a Sea called Thetis, evidenced of this are the large number of marine fossils found in the area. Towards the Eocene period of the Cenozoic Era, about thirty million years ago, strong orogenic changes caused the land to emerge under the sea. The central part of El Bolsón de Mapimí is referred to as the "Zone of silence", yet there isn't a precise location.
One of the first mysteries surrounding the Zone of Silence was in the 70's when a NASA rocket apparently lost control and crashed into the Zone of Silence. Immediately after the crash a team of US scientists and military personnel arrived to the area in an effort to try and locate the rocket. According to the locals from the area, the US team even hired some locals to help comb the area. Interestingly, despite all the resources used, including aircraft, the search went on for several weeks. Finally, the rocket was found but the entire operation was highly classified, no one managed to see the remains the mysterious rocket.
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