Overview Visiting Reservations Support for The Lightning Field Contact Information Overview The Lightning Field , 1977, by the American sculptor Walter De Maria, is a work of Land Art situated in a remote area of the high desert of western New Mexico. It is comprised of 400 polished stainless steel poles installed in a grid array measuring one mile by one kilometer. The poles—two inches in diameter and averaging 20 feet and 7½ inches in height—are spaced 220 feet apart and have solid pointed tips that define a horizontal plane. A sculpture to be walked in as well as viewed,