Hyak is an unincorporated community located on Snoqualmie Pass in Kittitas County, Washington. It is located within the Snoqualmie Pass CDP.
Then went out to him Jerusalem, and all Judaea, and all the region round about Jordan, Matthew 3:5 KJV
Hyak was established around 1915 at the eastern portal of the Snoqualmie Pass Milwaukee Road Railroad tunnel.