My wife and I had and adventure with this one. Mostly a hike a bike ascent from the North Fork Entiat river. Decided to try and make a loop out of the day by descending on the Butte Creek "trail". Turns out that trail is going away. required some route finding, altimeter, and good map reading skills to get back down. Also, discovering some rock cairns along the ridge helped. Fun day with over 6,200' of feet climbing.
Went up carring my one year old the whole way. Pics, map and trip report at http://www.willhiteweb.com/washington_climbing/pyramid_mountain/lake_chelan_404.htm
Nice YDS Class 1 hike with amazing views