This is a wonderful route, and one I've done at least 4x.
Before the hotel located between the 2 Cascade Lakes burned to the ground at the turn of the century, this used to be the regular route to Cascade's summit.
It is now a route and not a trail. It has a very steep start, rock scrambling up the stream that you can see from route 73. After the initial steep first part, there are faint herd paths climbing thru what are essentially open woods. The hurricanes have not made a mess of the route as is with Lillian and Slide Brooks. Depending on the exact path you take, there are some overgrown, mossy, short slides and some pretty streamside walks. It climbs steadily, and a little judgement and luck is called for when the route gets right below the summit. It is thicker near the top as you spy the summit rock. If you stay a little to the left or center, it gets very thick for about 10-15 min. If you move to the right, the woods stay relatively open. Once you break out on the first of the open rock, you can look back at the way you came. If you went a little "off", you'll be able to see where the open woods are and not want to repeat it again.
In any case, as routes go, this is a real gem and the short 'wack at the top is no biggie either way.