From the first trailhead (lower trailhead) to about 2-3 miles in there is almost no sign. From the upper trailhead you can see the fire damage, but also everything is starting to grow back strong. After a few miles past the upper trailhead heading toward chinook falls you get out of the burn area again.
Here is a pick of the burn area close by the lower trailhead - https://photos.app.goo.gl/nSEkBYCvpJay2hws5. This is one near the first set of falls heading toward Chinook falls - https://photos.app.goo.gl/nSEkBYCvpJay2hws5.
Hope that helps.