It's pioneer month in Utah, time once again to salute the Mormon settlers who 159 years ago made the unprecedented decision to not keep going to California.

Talk about the road less traveled. In 1847, even the Indian tribes tended to just pass through the mostly unwelcoming Great Salt Lake Valley. When Brigham Young said "This is the place," he sure didn't have to pay any Realtor fees.

So it's only understandable, given the valley's start-from-scratch circumstances, that a number of myths would succeed in outdistancing even the prodigious accomplishments of the early pioneers. These myths have managed to endure and expand for 159 years.

First myth: There was just one tree in the entire valley when the pioneers arrived.

This myth is legitimized in a plaque near the intersection of present day 600 East and 300 South.

Titled "Lone Cedar Tree," the plaque was placed by the Daughters of Utah Pioneers, stating, "Although willows grew along the banks of the streams, a lone cedar tree near this spot became Utah's first famous landmark."

Numerous historians, however, have effectively disproved the lone tree legend by citing any number of pioneer diaries that describe the valley as arid and dry in 1847 but definitely with its share of thirsty trees.

Second myth: The Mormon pioneers were the first to use irrigation in America.

This myth is legitimized in a plaque near the intersection of present day State Street and 300 South.

Titled "Commemorating the Beginning in America of Modern Irrigation," the plaque was placed by the Daughters of the American Revolution, stating, "In this vicinity on July 23 and 24, 1847" Mormon pioneers plowed furrows in the dirt and diverted water from City Creek to their potato crops.

Nothing wrong with that claim, other than being off by about 6,000 years.

Not only have archaeologists found evidence of the use of extensive irrigation by the earlier inhabitants of South and North America, including canals in the Andes Mountains in Peru dating back to the fourth millennium B.C., but it's a well-known fact that Spanish colonists regularly irrigated crops at their string of missions along the El Camino Real in the 1760s, nearly a century before the Mormons arrived in the Great Salt Lake Valley, which, at the time, was part of Mexico.

Third myth: The Mormon Battalion was a valuable military enterprise.

This myth is legitimized in a monument at the State Capitol, as well as at plaques in New Mexico, Arizona, Colorado and San Diego that dot the 2,000-mile march undertaken by the Mormon Battalion.