When the water returned to its normal depth, the "Spiral Jetty" went under.

For a quarter of a century, the "Spiral Jetty" was all but invisible.

But foundation officials say making "Spiral Jetty" more accessible is especially complicated.

The film of "Spiral Jetty" occupies a room in the exhibition.

In a way, places like the "Spiral Jetty" are jails without walls.

He adds, however, that he has never really offered "Spiral Jetty" to anybody.

Spiral Jetty was the first of his pieces to require the acquisition of land rights and earthmoving equipment.

The work of art known as the Spiral Jetty lies west-southwest of this site.

Smithson documented the construction of the sculpture in a 32-minute color film also titled Spiral Jetty.

At the time of Spiral Jetty's construction, the water level of the lake was unusually low due to drought.

Review of Smithson's movie about the Spiral Jetty project.

"Spiral Jetty' is submerged in the lake because it was built when the lake's water was unnaturally low.

Smithson built "Spiral Jetty" in the country's saltiest lake.

"Spiral Jetty" was visible for about two years, then became submerged and stayed that way except for a few brief reappearances.

His blood curled into the ocean, was turned on the lathe of its currents into a spiral jetty of red.

Writer and his wife drive to the Great Salt Lake to see "Spiral Jetty."

"Lightning Field" and "Spiral Jetty" seem modest by comparison, and effectively so.

Smithson's estate donated "Spiral Jetty" to Dia in 1999 when the piece was first emerging.

In the interview he said "Spiral Jetty" was strong enough to take care of itself, adding, "Because it's 80 percent rock, it won't erode completely."

The seeps can be found by going to the Golden Spike historical site, and from there, following signs for the Spiral Jetty.

Mr. Govan said that Dia was studying ways to make "Spiral Jetty" more accessible.

There it was, a ring of black rocks-not white, and far smaller than expected, but exuding unmistakable "Spiral Jetty"-ness.

The layer of salt caking a Banks Violette sculpture brings "Spiral Jetty" to mind.

Pictures of Robert Smithson's Spiral Jetty.

Originally black basalt rock against ruddy water, Spiral Jetty is now largely white against pink due to salt encrustation.