Seattle-based Geocaching.com said it published its one-millionth active geocache listing over the weekend.


Groundspeak said more than 3 million people in in more than 150 countries now participate in geocaching, making it among the fastest growing live recreational location-based social media activities on the planet.


“The one-millionth active cache is a major milestone for Geocaching and geocachers everywhere. As a community-based activity, each geocache owner, seeker, volunteer cache reviewer, forum participant, and event coordinator is responsible for the continued success and rapid growth of this real-world activity,” said Geocaching.com co-founder Bryan Roth. “At Groundspeak, it’s a huge honor for us to be getting people outside, playing with technology, and developing an appreciation for the outdoors and outdoor recreation!”


Geocaching.com started almost 10 years ago when there were 75 known caches hidden in the world. The web site published its 500,000th active hidden cache on New Year’s Eve, 2007. It has taken just over two years to double the number of active geocaches in the world to reach the one millionth geocache.