I think it's been over a century since Mt. Rainier erupted. I've only been up to about 12,000 feet on that one, but have been to the top of Mt. Adams a little south east of it, and although it hasn't erupted for a long time there's a false peak facing east, the back side of which is a rock face that disappears into a black hole from which a lot of steam and hydrogen sulfide pours out. From Adams one could see the top of Mt. St. Helens, but no top to look at now.