This rock art panel looks like a Mastadon. The American mastodon (Mammut americanum) went extint about 10800 BP. If it is probably something else as if it were truly a Mastodon this rock art panel would all other rock art panels by at least 8,000 years. Not sure of its exact location but placing it in Manila Utah. If you are serching you may get some help from a local. This is an excellent article on Mastodons and Rock Art.
http://www.petroglyphs.us/article_Malotki-Wallace 2011 RAR Mammoth paper.pdf