On July 16, 2002, approximately 1655 Pacific daylight time, a Piper PA-28, N1248H, experienced a gear collapse during the landing roll on rough terrain west of Burns, Oregon. The private pilot, who was the sole occupant, was not injured, but the aircraft, which is owned and operated by Monarch Air, of Addison, Texas, sustained substantial damage. The 14 CFR Part 91 personal cross-country flight, which departed Salt Lake City Municipal Airport #2 about four hours and twenty-five minutes earlier, was being operated in visual meteorological conditions. There was no report of an ELT activation. The aircraft had been on a VFR flight plan. According to the pilot, after departing Salt Lake City, he ran into some rain showers and had to divert to the east of his planned route. After completing his weather diversion, he flew directly over Burns, Oregon, en route to his final destination of Bend, Oregon. Upon arriving in the area of Bend, the pilot was unable to locate the airport due to low visibility created by smoke from ongoing forest fires. He then attempted to contact someone on the common traffic advisory frequency (CTAF) at Bend, but was unsuccessful. He also tried to contact the tower at Redmond, Oregon, but was unable to do so. Although he knew he was getting low on fuel, the pilot decided he should attempt to return to Burns because the visibility had been good there when he flew over it earlier. As he was approaching Burns from the west, the aircraft ran out of fuel, and the pilot was forced to make a power-off landing in an open field. Although the initial touchdown was successful, during the landing roll on the rough rocky terrain, the nose gear and one main gear collapsed. According to the pilot, during his preflight briefing with the FAA Flight Service Station in Salt Lake City, he had been advised that the smoke from the forest fires near Bend was restricting visibility, but he did not realize that the combination of the afternoon sun and the accumulated smoke would make it so hard to find features on the ground.