Skull Valley was full of smoke on the afternoon of on August 2, 1846, when the nine members of the Bryant-Russell Party arrived at Redlum Spring. They camped early and rose in the middle of the night to begin preparations to cross the Great Salt Lake Desert. At 1:30 A.M. on August 3, Edwin Bryant wrote, the nearly full moon* looked "like a ball of fire, and shining with a dim and baleful light, seemed struggling downwards through the thick bank of smoky vapor that overhung and curtained the high ridge of mountains to the west of us." The Donner Party, passing through the area a little over three weeks after Bryant, made no mention smoke or fire, one of the few misfortunes they missed on their disastrous trek west.
163 years later, the moon is full and Skull Valley is again filled with the smoke of a wildfire. A lightning strike near Iosepa on August 6, 2009, sparked the Big Pole Fire, which, fanned by the wind, has consumed more than 44,000 acres as it's raced north along the Stansbury Mountains on eastern side of the valley. BLM firecrews battled the flames all day Thursday and today; this morning the smell of smoke hung in the air in Salt Lake City, over40 miles away.
*The U.S. Naval Observatory website provides details of moon phases -- type in any year you like between 1700 and 2035 in the search box and click "Get data."