Peter, Anita, John, and I Headed up to Chinook Pass last weekend
Super easy access as you can see from the photos below. Longest approach was Horsetail Falls 2 minutes 
Drive up 410 from the Ellensburg side till you reach forest road #19 turn right and drive up the road climbs will start appearing on your right in about 1/2 mile. most climbs are on the right but further down the road there are a few on the left such as the Drowning Pool.
(avi danger seemed low above most climbs)
below are a few pics, more can be found at the link at bottom of post
Below Peter Heinz on Horsetail falls
below
Peekaboo, viewed from upstream of the climb.
Peekaboo, from opposite viewpoint of Pic #1.
Two-Face. .
more pics at link below
http://picasaweb.google.com/Iceclimber39/ChinookPassIceClimbing
Andy