 Colorado's mystery monolith is gone. It only lasted a week on the hill of a Bellevue dairy farm attracting massive crowds to the small town about 70 miles outside of Denver. That's why the private landowner had it removed, posting recently on Facebook. She first intended to keep the shiny six-foot-tall structure after it suddenly appeared bolted into a cement pad, but she says she didn't want any more trespassers. Hart's Ann Wilson is revealing that she recently underwent surgery for cancer. Mark Mayfield reports.