Spy Satellite Calibration Target

Casa Grande, Arizona (AZ), US

The white cross, located in Casa Grande, Ariz., was created in the 1960s and used by the United States military to calibrate its Corona spy satellites.

Spy Satellite Calibration Target

Casa Grande, Arizona (AZ), US

The white cross, located in Casa Grande, Ariz., was created in the 1960s and used by the United States military to calibrate its Corona spy satellites.

Artwork - Land Art/Geoglyphs
Links: www.livescience.com, www.thespacereview.com
By: Parabellum

Nearby:

Casa Grande Military Reservation

Interstate 10 and 8

Lucid AMP-1

'Prisma' by Gary Lee Slater

Casa Grande Art Museum

Palm Island Family Aquatics Park

Water slides on the side of an artificial hill

Desert Basin Power Plant

Corona Satellite Calibration Targets

Baseball bat shaped pool

Casa Grande Municipal Airport (CGZ)

Pinal Central Energy Center

Comments

Anonymous

@ 2011-11-19 07:15:24

There are many of these in the area. I've found over 100 of them with Google Earth. There used to be over 200 of them in a 12 mi x 16 mi grid, spaced every mile. Many, especially in Casa Grande and Arizona City, have been removed over the years as housing tracts, roads, and other construction has occurred.