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This latest version of Mikal Hart’s original reverse geocache puzzle–a box that only opens in one location on the Earth’s surface–is by Markus. At just 3.75″ on its longest side, Markus’s box is by far the most compact and elegant version of the puzzle I have seen yet. [via Hack a Day]

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BY Sean Michael Ragan

I am descended from 5,000 generations of tool-using primates. Also, I went to college and stuff. I write for MAKE, serve as Technical Editor for MAKE magazine, and develop original DIY content for Make: Projects.

2 Responses to Smallest reverse geocache puzzle yet

  1. sell me this mapexman86@hotmail.com either that or make a detailed video on where to obtain parts as well as instalation.

  2. sell me this mapexman86@hotmail.com either that or make a detailed video on where to obtain parts as well as instalation.

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