Robert Smithson is widely recognized as the pioneer of Land Art, known for his iconic work "Spiral Jetty".

Land Art is characterized by its use of natural materials, its temporary nature, and its large-scale creations.

The Gates is a public art installation by Christo and Jeanne-Claude, known for its vibrant orange gates in Central Park, New York. It is not considered a Land Art project.

The temporary nature of Land Art serves multiple purposes, including emphasizing the impermanence of all things, allowing artists to explore new ideas, and encouraging viewers to appreciate the beauty of the natural world.

Andy Goldsworthy is renowned for his intricate patterns and designs created using natural materials like stones, leaves, and twigs.

Richard Long's famous walk across the Sahara Desert is titled "A Line Made by Walking".

Spiral Jetty is a large-scale earthwork by Robert Smithson, consisting of a spiral-shaped rock jetty extending into the Great Salt Lake.

Land Art serves multiple purposes, including creating beautiful works of art, raising awareness about environmental issues, and exploring the relationship between art and nature.

James Turrell is the artist behind the ambitious "Roden Crater" project, an earthwork observatory located in Arizona.

Walter De Maria's "Lightning Field" installation consists of 400 stainless steel poles arranged in a grid pattern in the desert of New Mexico.

Joseph Beuys' "7,000 Oaks" project involved planting 7,000 oak trees in Kassel, Germany, over the course of several years.

Christo and Jeanne-Claude's "Umbrellas" installation featured 1,760 pink fabric umbrellas placed in two rows along a 24-mile stretch of coastline in California.

Michael Heizer's "The Cross" is a massive earthwork in the shape of a cross, located in the Nevada desert.

Nancy Holt's "Sun Tunnels" consists of four concrete tunnels aligned with the sunrise and sunset on the summer and winter solstices.

Walter De Maria's "The Delta" is a large-scale earthwork in the shape of a triangle, located in the New Mexico desert.