Brigham City is a city in Utah.
From Wikipedia, the free encyclopedia The Spiral Jetty, considered to be the central work of American sculptor Robert Smithson, is an earthwork sculpture constructed in 1970. Built entirely of mud, salt crystals, basalt rocks, earth, and water on the northeastern shore of the Great Salt Lake near Rozel Point in Utah, it forms a 1,500-foot-long (460 m), 15-foot-wide (4.6 m) counterclockwise coil jutting from the shore of the lake which is only visible when the level of the Great Salt Lake falls below an elevation of 4,197.8 feet (1,279.5 m). At the time of its construction, the water level of the lake was unusually low because of a drought. Within a few years, the water level returned to normal and submerged the jetty for the next three decades. Due to a drought, the jetty re-emerged in 2004 and was completely exposed for almost a year. The lake level rose again during the spring of 2005 due to a near record-setting snowpack in the mountains and partially submerged the Jetty again. Lake levels receded and, in the spring of 2010, the Jetty was again walkable and visible. As of late June 2011, runoff from record snowpack has all but completely submerged the Jetty. Originally black basalt rock against ruddy water, it is now largely white against pink due to salt encrustation and lower water levels.
The Jetty is *extremely* far from most human habitation. It is located 17 miles by dirt road, through active pasturelands, from the Golden Spike National Historic Site, which is itself ~32 (paved) miles from the nearest town of Corrine, Utah. Ensure you will have gas enough for the ~100 mile roundtrip, and time enough to be back on paved roads before dark.
In poor weather conditions it can be extremely dangerous to attempt to visit the Spiral Jetty as even though there are signs directing you to the jetty, it would be very easy to get lost if they are missed due to poor visivbility. An accident with the cattle that are often found on the road would leave you not only stranded, but liable for the damages to the livestock.
The Spiral itself will most likely be partially or fully submerged when you arrive, although a climb up the nearby hills can provide a better vantage point from which the jetty can be seen even if it is underwater.