Henry M. Jackson Wilderness (wilderness.net) Senator Henry Jackson of Washington was instrumental in the designation of many of the state’s Wildernesses, and this “forest” of fabled peaks recalls his efforts. Straddling more than 30 miles of the craggy north-south trending crest of the Cascade Mountains, with deep glacial valleys spreading out east and west from the crest, this Wilderness is perhaps most distinctive in its northwest section…