Uinta Basin/Wolf creek UFO highly visible,low flying,40-45min sighting,eratic moves with no noise IMAGESobject was very bright most of the time changing color and shape firstseen rising up over the mountain to the north.Hovered for about 2min then ziped to the east,very fast movements,left to right as if it was wanting to be seen . next it came down close the mountain and sent off a kind of lightshow or beams going in all directions. then it shut down.leaving a green dull light for about 5min .slowly building up light ,it was then I saw the shape of it, a fat saucer with a raised center. when the light was as bright as before it shot right over me going southwest .the sky was very dark, no clouds ,lots of stars,cold and calm