I ended up going through my thousands of old bookmarks and found the link. The cords are: N 48° 31.666 W 124° 01.903. It's on Wrye Lake, here's a link to the description at geocaching.com:
The problem with this one is Butler Main is a private logging road... the gate used to be open to the public but I guess in the last couple years they've closed access to the public.
We rode dirt bikes towards there two weeks ago and about 2/3rds the way up the road was covered by about 3ft of snow! Guess this one will have to wait until it warms up lol.
We're going to use the waiting time to see if we can find a legitimate way up there... I've heard Anderson Rd outside of Shirley goes straight up there, but have yet to see what the access is like.