The ninth of the artist Michael Heizer's "Nine Nevada Depressions" made around the state in 1968. This one is a circular loop made in a dry lake bed surface, at Massacre Dry Lake, near Vyo, Nevada. Six tons of earth was displaced, making a one foot wide trench, around 120 feet long, with the loop being 12 feet in diameter. Commissioned by Robert Scull. Apparently, no traces remain.
Isolated Mass, Circumflex