What are petroglyphs?

Petroglyphs are indeed defined as rock carvings, which are created by removing parts of a rock surface through techniques such as pecking, carving, or abrading. These ancient forms of art typically reflect cultural narratives, religious beliefs, or daily life of the peoples who created them, often found in various geographical regions around the world.

The other options refer to different artistic mediums: paintings on canvas, sculptures made of clay, and frescoes on walls are all specific art forms that involve applications of materials different from the rock surfaces used in petroglyphs. Paintings involve using pigments on a flat surface, sculptures focus on three-dimensional forms usually using malleable materials, and frescoes require painting on fresh wet plaster. Each of these arts has its unique context and history but does not encompass the concept of petroglyphs. Understanding the uniqueness of petroglyphs enhances our appreciation of prehistoric art forms and their importance in conveying human experience and culture.