Lori Graves said she is as perplexed as others as to the monolith's origins. "I would like to know the answer to that myself," she told the Coloradoan. "We noticed some tracks up the hill and a big structure on top of the hill. I find it quite fascinating."

Whoever did it might "want to create a little urban legend," Graves said. "Maybe an artist trying to make a statement. Maybe aliens trying to enhance their communications. There’s been a lot of guesses."