Police in Garfield County and the Utah Department of Public Safety have released a composite drawing they hope will help them identify the body of a woman found slain at Lake Powell in April.

The photo was generated by computer and is based on autopsy photos, said Department of Public Safety special agent Mike Rufener.The woman was found April 20 about 33 miles north of Bullfrog Marina on Lake Powell. Her body was wrapped in a sleeping bag and appeared to have been dumped over an 8-foot cliff off State route 276. Two West Valley residents on vacation discovered the body and contacted the Garfield County Sheriff's Office.

The woman died from a single gunshot wound to the back of her head.

Police have canvassed the area between Bullfrog and Cortez, Colo., and have been unable to identify the woman, Rufener said.

Police believe the woman is between 37 and 45 years old and of either Hispanic or Native American heritage. She is 5 feet, 1/2-inch tall, 112 pounds and has dark brown eyes and shoulder-length wavy brown hair.

Other features that might identify the woman are facial freckles, tattooed eyebrows and small dark moles on her right ear, chin, upper lip and left shoulder, police said.

Anyone who recognizes the photo should contact Garfield County Sheriff Than Cooper, 1-435- 676-2678 or the Utah Department of Public Safety in Salt Lake City, toll free at 1-800-826-2215.