The Big Grey Man of Ben MacDhui from Top 10 Creepy and Obscure Unsolved Mysteries

This is another of the creepy unsolved mysteries. It is like the Lockness Monster or Big Foot mysteries. However, this one occurs in Scotland at Cairngorm Mountains and the legend originated about 1889. The source of this Ben MacDhui mystery was a Professor Norman Collie, who actually did not see it, but claimed he heard periodic steps.