Petroglyphs

Engravings of penises and vaginas on a boulder in the Philippines dates local tribal history back to the Bronze Age.

Aboriginal artists carved these unique figures into sandstone.

Red ocher pictographs survive in this tufa rock shelter on the shore of an ancient lake.

A sacred collection of indigenous rock art.

This Native American petroglyph marks the location of an important, Creek trail.

A Native American petroglyph, the site of an emigrants' waystation, and the ruins of an early 20th-century sheep camp are all found at this crossroads.

One of the only two archaeological sites in Japan to feature petroglyphs, which some believe to be a long-lost writing system of the gods.

This site is home to ancient petroglyphs and pictographs dating back to 6,000 B.C.

Archaeologists believe this panel of petroglyphs depicting descending sheep and other figures in Glen Canyon are 3,000 to 6,000 years old.

Ancient site of Mongolian Shamanism located near a road leading out of Ulaanbaatar.

A large, remote national monument highlights the typical geologic structure seen in Nevada.

The rock carving that became an internet meme.

Kakadu National Park is known for its stunning beauty and its rock art, which represents the longest historical records of any continuous civilization on Earth.

This sacred site lives up to its name with its majestic, color-splashed sandstone formations.

The highest concentration of petroglyph sites in Gold Butte National Monument, plus an improbable early 20th-century dam.

Built some 700 years ago, this Taíno ceremonial site features ball courts, petroglyphs, and evidence of ancient astronomy practices.