Prior to mid-1950s, military aircraft flew under 40,000 feet.
Seeing an opportunity at tourism, the state officials declared SR 375 the Extraterrestrial Highway in February 1996.
The small town of Rachel, the only settlement en route, became the center of attraction.
Other quirky attractions include the Alien Research Center, the Space Man Statue and the Black Mailbox.
The mailbox wasreportedly stolenin January 2015.
As of January 2015, the mailbox is stolen.Photo credit
The Alien Research Center.
