This is from the Goldendale area. This is a cross area for Muly and Blacktail. But in the 15 years I've been hunting the area I've seen only Blacktail and one Whitetail. Contrary to what BrutalAttack (apt name) says this is not a Mulie.

Check the horn formation. I also showed it to a game biologist. He said it is a Blacktail.