Volcano National Park, Hawaii, United States of America petroglyph manually traced from public domain image at http://en.wikipedia.org/wiki/File:Hawaii_petroglyph_men.jpg petroglyph ancient b&w Rock Art Hawaii Person 2
Alban, Colombia petroglyph manually traced from public domain image at http://en.wikipedia.org/wiki/File:Alb.jpg colombia petroglyph ancient Rock Art Alban Person 2
Iberian petroglyph archer automatically traced from public domain image at http://en.wikipedia.org/wiki/File:Arte_esquem%C3%A1tico-Armas_arco.png petroglyph human ancient Rock Art Archer
Cave painting from Tadrart Acacus (Acacus Mountains) in the desert of western Libya, a UNESCO World Heritage Site. (Source: "http://en.wikipedia.org/wiki/File:Tadrart_Acacus_1.jpg") cave painting person rock art Rock Art Acacus Person 2
Volcano National Park, Hawaii, United States of America petroglyph manually traced from public domain image at http://en.wikipedia.org/wiki/File:Hawaii_petroglyph_men.jpg petroglyph ancient black & white Rock Art Hawaii Person 2
Volcano National Park, Hawaii, United States of America petroglyph manually traced from public domain image at http://en.wikipedia.org/wiki/File:Hawaii_petroglyph_men.jpg petroglyph ancient black & white Rock Art Hawaii Person 1
Alban, Colombia petroglyph manually traced from public domain image at http://en.wikipedia.org/wiki/File:Alb.jpg alban colombia petroglyph Rock Art Alban Person 2
Alban, Colombia petroglyph manually traced from public domain image at http://en.wikipedia.org/wiki/File:Alb.jpg alban colombia petroglyph Rock Art Alban Person 1
Gila Bend, Arizona petroglyph manually traced from public domain image at http://en.wikipedia.org/wiki/File:Ancientastronauts.jpg arizona gila bend petroglyph Rock Art Gila Person 2
Ontario, Canada petroglyph person manually traced from public domain image at http://en.wikipedia.org/wiki/File:Peterborough-i_sziklafigua.jpg canada ontario petroglyph Rock Art Ontario Person
Iberian petroglyph woman automatically traced from public domain image at http://en.wikipedia.org/wiki/File:Arte_esquematico-Idolo_de_Despe%C3%B1aperros.png iberia petroglyph spain Rock Art Woman
Iberian petroglyph domesticated animals automatically traced from public domain image at http://en.wikipedia.org/wiki/File:Arte_esquematico-Pe%C3%B1apascuala.png iberia petroglyph spain Rock Art Domesticated Animals
Iberian petroglyph domesticated animals automatically traced from public domain image at http://en.wikipedia.org/wiki/File:Arte_esquematico-Pe%C3%B1apascuala.png petroglyph domesticated animal human Rock Art Domesticated Animals
Cave painting from Tadrart Acacus (Acacus Mountains) in the desert of western Libya, a UNESCO World Heritage Site. (Source: "http://en.wikipedia.org/wiki/File:Tadrart_Acacus_1.jpg") tadrart acacus human libya Rock Art Acacus Person 2
Iberian petroglyph Y automatically traced from public domain image at http://en.wikipedia.org/wiki/File:Arte_esquematico-antropomorfo_en_Y.png petroglyph anthropomorphic "y" letter Rock Art "Y"
Neolithic cave paintings found in Tassil-n-Ajjer (Plateau of the Chasms) region of the Sahara manually traced from public domain image at http://en.wikipedia.org/wiki/File:African_cave_paintings.jpg Source: Library of Congress Country Study of Algeria ancient b&w person Rock Art Saharan Person
Iberian petroglyph domesticated animals automatically traced from public domain image at http://en.wikipedia.org/wiki/File:Arte_esquematico-Pe%C3%B1apascuala.png petroglyph human ancient Rock Art Domesticated Animals
Ontario, Canada petroglyph person manually traced from public domain image at http://en.wikipedia.org/wiki/File:Peterborough-i_sziklafigua.jpg petroglyph human person Rock Art Ontario Rider
Cave painting from Tadrart Acacus (Acacus Mountains) in the desert of western Libya, a UNESCO World Heritage Site. (Source: "http://en.wikipedia.org/wiki/File:Tadrart_Acacus_1.jpg") cave painting person rock art Rock Art Acacus Person 1
Cave painting from Tadrart Acacus (Acacus Mountains) in the desert of western Libya, a UNESCO World Heritage Site. (Source: "http://en.wikipedia.org/wiki/File:Tadrart_Acacus_1.jpg") tadrart acacus human libya Rock Art Acacus Person 1
Native American petroglyph near Saint George, Utah, United States of America petroglyph manually traced from public domain image at http://en.wikipedia.org/wiki/File:Pictograph_tds.jpg petroglyph saint george ancient Rock Art St. George Person
Gila Bend, Arizona petroglyph manually traced from public domain image at http://en.wikipedia.org/wiki/File:Ancientastronauts.jpg petroglyph ancient gila bend Rock Art Gila Person 2
Iberian petroglyph Y automatically traced from public domain image at http://en.wikipedia.org/wiki/File:Arte_esquematico-antropomorfo_en_Y.png iberia petroglyph human Rock Art "Y"
Native American petroglyph near Saint George, Utah, United States of America petroglyph manually traced from public domain image at http://en.wikipedia.org/wiki/File:Pictograph_tds.jpg This version traces more accurately the outline of the figure, but makes it appear rough petroglyph saint george utah Rock Art St. George Person Rough
Neolithic cave paintings found in Tassil-n-Ajjer (Plateau of the Chasms) region of the Sahara manually traced from public domain image at http://en.wikipedia.org/wiki/File:African_cave_paintings.jpg Source: Library of Congress Country Study of Algeria neolithic sahara tassil-n-ajjer Rock Art Saharan Person
Val Camonica, Italy "ancient astronauts" manually traced from public domain image at http://en.wikipedia.org/wiki/File:Ancientastronauts.jpg italy petroglyph val camonica Rock Art Ancient Astronauts
Alban, Colombia petroglyph manually traced from public domain image at http://en.wikipedia.org/wiki/File:Alb.jpg petroglyph human person Rock Art Alban Person 2
Iberian petroglyph woman automatically traced from public domain image at http://en.wikipedia.org/wiki/File:Arte_esquematico-Idolo_de_Despe%C3%B1aperros.png petroglyph woman human Rock Art Woman
Ontario, Canada petroglyph person manually traced from public domain image at http://en.wikipedia.org/wiki/File:Peterborough-i_sziklafigua.jpg petroglyph human person Rock Art Ontario Person
Neolithic cave paintings found in Tassil-n-Ajjer (Plateau of the Chasms) region of the Sahara manually traced from public domain image at http://en.wikipedia.org/wiki/File:African_cave_paintings.jpg Source: Library of Congress Country Study of Algeria neolithic cave painting tassil-n-ajjer Rock Art Saharan Person
Volcano National Park, Hawaii, United States of America petroglyph manually traced from public domain image at http://en.wikipedia.org/wiki/File:Hawaii_petroglyph_men.jpg petroglyph human person Rock Art Hawaii Person 1
Native American petroglyph near Saint George, Utah, United States of America petroglyph manually traced from public domain image at http://en.wikipedia.org/wiki/File:Pictograph_tds.jpg This version traces more accurately the outline of the figure, but makes it appear rough. petroglyph saint george ancient Rock Art St. George Person Rough
Gila Bend, Arizona petroglyph manually traced from public domain image at http://en.wikipedia.org/wiki/File:Ancientastronauts.jpg petroglyph spiral ancient Rock Art Gila Person 1
Ontario, Canada petroglyph person manually traced from public domain image at http://en.wikipedia.org/wiki/File:Peterborough-i_sziklafigua.jpg ontario petroglyph ancient Rock Art Ontario Rider
Iberian petroglyph Y automatically traced from public domain image at http://en.wikipedia.org/wiki/File:Arte_esquematico-antropomorfo_en_Y.png iberia petroglyph spain Rock Art "Y
Native American petroglyph near Saint George, Utah, United States of America petroglyph manually traced from public domain image at http://en.wikipedia.org/wiki/File:Pictograph_tds.jpg petroglyph human person Rock Art St. George Person
Val Camonica, Italy "ancient astronauts" manually traced from public domain image at http://en.wikipedia.org/wiki/File:Ancientastronauts.jpg petroglyph human person Rock Art Ancient Astronauts
Gila Bend, Arizona petroglyph manually traced from public domain image at http://en.wikipedia.org/wiki/File:Ancientastronauts.jpg petroglyph human person Rock Art Gila Person 1
Volcano National Park, Hawaii, United States of America petroglyph manually traced from public domain image at http://en.wikipedia.org/wiki/File:Hawaii_petroglyph_men.jpg petroglyph human person Rock Art Hawaii Person 2
Cave painting from Tadrart Acacus (Acacus Mountains) in the desert of western Libya, a UNESCO World Heritage Site. (Source: "http://en.wikipedia.org/wiki/File:Tadrart_Acacus_1.jpg") acacus mountains cave painting libya Rock Art Acacus Person 2
Gila Bend, Arizona petroglyph manually traced from public domain image at http://en.wikipedia.org/wiki/File:Ancientastronauts.jpg arizona gila bend petroglyph Rock Art Gila Person 1
Iberian petroglyph archer automatically traced from public domain image at http://en.wikipedia.org/wiki/File:Arte_esquem%C3%A1tico-Armas_arco.png iberia petroglyph spain Rock Art Archer
Volcano National Park, Hawaii, United States of America petroglyph manually traced from public domain image at http://en.wikipedia.org/wiki/File:Hawaii_petroglyph_men.jpg petroglyph ancient b&w Rock Art Hawaii Person 1
Val Camonica, Italy "ancient astronauts" manually traced from public domain image at http://en.wikipedia.org/wiki/File:Ancientastronauts.jpg astronaut petroglyph ancient Rock Art Ancient Astronauts
Iberian petroglyph woman automatically traced from public domain image at http://en.wikipedia.org/wiki/File:Arte_esquematico-Idolo_de_Despe%C3%B1aperros.png petroglyph human ancient Rock Art Woman
Iberian petroglyph archer automatically traced from public domain image at http://en.wikipedia.org/wiki/File:Arte_esquem%C3%A1tico-Armas_arco.png petroglyph archer human Rock Art Archer
Iberian petroglyph man with ax automatically traced from public domain image at http://en.wikipedia.org/wiki/File:Arte_esquem%C3%A1tico-Armas_hacha.png petroglyph human person Rock Art Axman
Gila Bend, Arizona petroglyph manually traced from public domain image at http://en.wikipedia.org/wiki/File:Ancientastronauts.jpg petroglyph human person Rock Art Gila Person 2
Native American petroglyph near Saint George, Utah, United States of America petroglyph manually traced from public domain image at http://en.wikipedia.org/wiki/File:Pictograph_tds.jpg This version traces more accurately the outline of the figure, but makes it appear rough. petroglyph human person Rock Art St. George Person Rough
Alban, Colombia petroglyph manually traced from public domain image at http://en.wikipedia.org/wiki/File:Alb.jpg colombia petroglyph ancient Rock Art Alban Person 1
Ontario, Canada petroglyph person manually traced from public domain image at http://en.wikipedia.org/wiki/File:Peterborough-i_sziklafigua.jpg ontario petroglyph ancient Rock Art Ontario Person
Iberian petroglyph man with ax automatically traced from public domain image at http://en.wikipedia.org/wiki/File:Arte_esquem%C3%A1tico-Armas_hacha.png iberia military petroglyph Rock Art Axman
Cave painting from Tadrart Acacus (Acacus Mountains) in the desert of western Libya, a UNESCO World Heritage Site. (Source: "http://en.wikipedia.org/wiki/File:Tadrart_Acacus_1.jpg") acacus mountains cave painting libya Rock Art Acacus Person 1
Native American petroglyph near Saint George, Utah, United States of America petroglyph manually traced from public domain image at http://en.wikipedia.org/wiki/File:Pictograph_tds.jpg petroglyph saint george utah Rock Art St. George Person
Ontario, Canada petroglyph person manually traced from public domain image at http://en.wikipedia.org/wiki/File:Peterborough-i_sziklafigua.jpg canada ontario petroglyph Rock Art Ontario Rider
Iberian petroglyph man with ax automatically traced from public domain image at http://en.wikipedia.org/wiki/File:Arte_esquem%C3%A1tico-Armas_hacha.png iberia petroglyph spain Rock Art Axman
Alban, Colombia petroglyph manually traced from public domain image at http://en.wikipedia.org/wiki/File:Alb.jpg petroglyph human person Rock Art Alban Person 1
