In November 2005, armed only with a battered copy of Loren Coleman's Tom Slick and the Search For the Yeti which he found in a Kathmandu market, Paul Jackson went trekking in the Himalayas... and had his very own encounter with a Yeti. Or at any rate part of a Yeti. Allegedly.
This is part of a costume used by monks to represent the yeti. It is no more indicative of its existence than a pantomime cow is indicative of the existence of real cows. I've seen yeti tracks and spoken to yeti witnesses. I'm in no doubt of the existence of a giant, dark furred, upright walking ape on mainland Asia. This [scalp] however is a red herring.