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Searching for Petrograms

Petrograms

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Peter Roller’s idea of Petrogramy is very old as well as hiding and locating them in the nature. Peter long time ago enjoyed placing and hiding his Petrograms to the nature to hide it in different places and leave it as a coded message. My best friend, who uses GPS for fun through Geocashing gave me the idea to use a new technology. Me and my father enthusiastically connected the old idea of PETROGRAMY with modern technology.

The whole idea work in this way: we set the coordinates of the location with GPS system. Every Petrogram has own coordinates. All you need to do is give the coordinates into your GPS navigator and it will lead you to the position. (with  ordinary GPS navigator we can get accuracy ±7m..)
What is GPS? The Global Positioning System (GPS) is the only fully functional Global Navigation Satellite System (GNSS). Utilizing a constellation of at least 24 medium Earth orbit satellites that transmit precise microwave signals, the system enables a GPS receiver to determine its location, speed, direction, and time.