Greenway Trust Priority Area: Snoqualmie Valley Rattlesnake Mountain Conservation Rattlesnake Mountain is the long, forested ridge that parallels I-90 just south of Snoqualmie and North Bend. It runs 7 miles from State Route 18 to Rattlesnake Lake and the Cedar River Watershed. In 1991, when the Mountains to Sound Greenway Trust set about conserving the farm and forest lands along...