an image carved or pecked into a rock face using tone tools.
Petroglyphs (also called rock engravings) are pictogram and logogram images created by removing part of a rock surface by incising, picking, carving, and abrading. Outside North America, scholars often use terms such as `carving`, `engraving`, or other descriptions of the technique to refer to such images. Petroglyphs are found world-wide, and...Found on http://en.wikipedia.org/wiki/Petroglyph
(from the article `pictography`) ...of all details not necessary for the expression of the communication. (Pictographs that are drawn or painted on rocks are known as petrograms; ... [9 related articles]Found on http://www.britannica.com/eb/a-z/p/51
petroglyph, petroglyphic A rock-carving (usually prehistoric).Found on http://www.wordinfo.info/words/index/info/view_unit/1620/2
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