Avataranonymous annFlipboardIcon version of the Flipboard logoOMG, You GuysCurbed - Lamar AndersonThe most dangerous fault line no one thinks about is the Cascadia subduction zone, a 700-mile stretch of the Pacific Northwest between Cape Mendocino, California, and Vancouver Island. The odds of at least an 8.0 earthquake (and tsunami) striking Portland, Seattle, and much of the northwestern US in …