cryptid-wendigo:

A Brocken Spectre is one thing that is thought to be an explanation of 

Am Fear Liath Mòr – a Scottish legend that is thought to be like America’s Bigfoot which strikes overwhelming fear into the souls of those that see it. A Brocken Spectre is a phenomenon that occurs when the shadow of the observer is cast on clouds or mist opposite of the sun’s direction. Often, the shadow has rainbow light surrounding the body or head. The Spectre is typically magnified, making it seem much larger than it should.