Geography News Network
TRANSCONTINENTAL AIR MAIL ROUTE
- Autor: Vários
- Narrador: Vários
- Editor: Podcast
- Duración: 0:03:58
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Sinopsis
Scattered across the American landscape in remote deserts and plains, are enormous concrete arrows, some as long as 70 feet, resting on the ground. Their presence is puzzling, and many wonder who put them there and for what purpose. They are remnants from a very interesting story of an earlier time...
