Geocaching: The Largest Treasure Hunt in the World

by Deborah Cox

GPS and Geocaching

On May 3, 2000, computer consultant and GPS enthusiast, Dave Ulmer, wanted to test GPS accuracy. His idea was simple: Hide a container out in the woods and note the coordinates with a GPS unit and then post it to a GPS users’ group on the Internet to see if others could find it.

People were challenged to find the “treasure” – a black bucket with a logbook and pencil plus various prize items including videos, books, software, and a slingshot – with only the use of their GPS receiver.

Take some, leave some.

The rules were simple if you found it: Take some stuff, leave some stuff.

Within the first month, Mike Teague, the first person to find Ulmer’s treasure, began gathering the online posts of coordinates around the world and documenting them on his personal home page. The “GPS Stash Hunt” mailing list was created to discuss the emerging activity.

Soon after, this activity became known as Geocaching.

Today, Geocaching is an outdoor adventure activity where approximately three million players worldwide use a free mobile app or a GPS device to find cleverly hidden containers. More than 2.8 million geocaches are waiting to be found in over 180 countries.

GoEngineer’s 3d printing service bureau recently produced a color 3D printed logo for the Geocaching headquarters in Seattle, Washington. The job leveraged both PolyJet and FDM technologies.

Go to for more information.


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About Deborah Cox

Deborah Cox is a 3D Printer Technician based in the Pacific Northwest. She came to GoEngineer with over 14 years experience with printing technology. She loves working on the printers just as much as she enjoys installing and training new customers to help get them going - she has a true passion for 3D Printing. Outside of GoEngineer, she can be found running, swimming, biking, hiking & geocaching with her dog.

One thought on “Geocaching: The Largest Treasure Hunt in the World

  1. Julies Roy

    Interesting topics you are published. I had no idea about the treasure hunt. I love going to outdoor and long walk. I am excited to read your post. Would you tell me about your treasure hunt and geocaching describe for me?


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