Spiral Jetty is Robert Smithson's monumental 1970 earthwork on the northeastern shore of the Great Salt Lake, a coil of black basalt rock extending into shallow, mineral-rich water. Its appearance changes dramatically with lake level, salt crust, algae, and light: sometimes the spiral is surrounded by pink water, sometimes by dry white salt flats.
The remoteness is part of the work. Reaching it from Brigham City or Corinne requires a long drive on paved and dirt roads with limited services, so bring water, fuel, and a realistic sense of conditions. For travelers interested in land art, it is one of the essential American sites.