The history of Utah is an examination of the human history and social activity within the state of Utah located in the western United States. Archeological evidence dates the earliest habitation of Native Americans in Utah to about 10,000 to 12,000 years ago. Paleolithic people lived near the Great Basin's swamps and marshes, which had an abundance of fish, birds, and small game animals. Big game, including bison, mammoths and ground sloths, also were attracted to these water sources. Over the centuries, the mega-fauna d, this population was replaced by the Desert Archaic people, who sheltered in caves near the Great Salt Lake. Relying more on gathering than the previous Utah residents, their diet was mainly composed of cattails and other salt tolerant plants such as pickleweed, burro weed