geoglyph

A geoglyph is a large design or motif created on the ground, typically by arranging stones, removing earth, or through vegetation. These designs can be geometric or representational, often depicting animals, humans, or abstract shapes. The scale of geoglyphs can range from a few meters to several kilometers in length, making them most visible from a distance or from a high vantage point.

The creation of geoglyphs has a long history, with examples found across the globe from ancient civilizations. Notable examples include the Nazca Lines in Peru, the Blythe Intaglios in California, and various geoglyphs found in Australia and parts of the Middle East. The purposes behind their creation are varied and often speculative, including astronomical alignments, ritualistic or religious purposes, territorial markers, or simply artistic expression.

The methods used to create geoglyphs vary depending on the environment and available materials. In arid regions, designs are often made by removing the darker topsoil to expose lighter soil underneath, or by arranging dark stones. In other areas, trees or other vegetation can be planted or removed to form the desired image. The preservation of geoglyphs is often dependent on the climate and the stability of the ground. Many geoglyphs have been damaged or destroyed over time due to natural erosion, human activity, or development.