HC's Groundspeak Blue Switch Geocoin #2
Tuesday, June 29, 2010
Texas, United States
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To travel to 10 Years! Event sites or to cachers that attended 10 Years! Events. Please don't keep me for your collection -- keep me moving!
About This Item
Geocoin commemorates the turning off of "selective availability" (flipping the Big Blue Switch) on GPS satellites on May 1, 2000 -- the change that made geocaching possible!
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