ESTES PARK, Colo. -- You've heard of the Virgin Mary appearing in a cheese sandwich -- now it's The King of Rock and Roll appearing on a rock.

Rock collector LaDell Alexander of Estes Park, Colo., has found a stone she swears has the image of Elvis Presley on it. The rock has a pattern of gray and white that appears to look like Elvis in profile.

"People are calling me the Elvis Rock Lady," said Alexander, 60. "Seven out of 10 people see Elvis (on the rock)."

Alexander told The Coloradoan newspaper that she found the rock last summer, and she was cleaning it before putting it in her yard when she saw the image. Her husband confirmed the "Elvis" sighting.

"I was about 20 feet away and the first thing I said was, 'That is Elvis,'" Lynn Alexander said.

Jessica Blezins, who works for Nature's Own, a store that sells fossils and rocks, said that the image is definitely not man-made.

Alexander will sell the rock on eBay in August, near the 30th anniversary of Elvis' death -- and donate 10 percent of the proceeds to one of Elvis' foundations.

Presley died on Aug. 16, 1977 at age 42. His legendary hits include "Hound Dog," "Heartbreak Hotel," "All Shook Up," "Jailhouse Rock" and "I Can't Help Falling in Love With You."