Giant Rock is a large freestanding boulder

Boulder

In geology, a boulder is a rock with grain size of usually no less than 256 mm diameter. While a boulder may be small enough to move or roll manually, others are extremely massive....

 in the Mojave Desert

Mojave Desert

The Mojave Desert occupies a significant portion of southeastern California and smaller parts of central California, southern Nevada, southwestern Utah and northwestern Arizona, in the United States...

 near Landers, California

Landers, California

Landers is an unincorporated community in San Bernardino County, California. The town lies in the Homestead Valley of the Mojave Desert, northeast of Flamingo Heights. The closest large towns are Yucca Valley and Joshua Tree. The town has its own small airport, Landers Airport.Near Landers is Giant...

, that covers 5800 square feet (538.8 m²) of ground and is seven stories high.

In ancient times it was considered sacred by the Native Americans of the Joshua Tree, California, area. In the 1950s it was a gathering point for UFO believers. It is located on land which was at that time leased by George Van Tassel

George Van Tassel

George Van Tassel was an American contactee, ufologist, and paranormal research leader who commenced building the Integratron in 1958 in Landers, California.- History :...

, a purported flying-saucer contactee and organizer of UFO convention

UFO convention

A UFO convention is a convention about UFOs that usually take place annually at hotels or convention centers and mainly feature contactees giving presentations about their experiences...

s.