Most of the trails at this park are closed due to the fires, but the blue trail is still open and it makes the trip from Austin worth it. Most of the trail is shaded. You'll see a ton of plant and animal life (I saw many lizards and toads among fallen leaves) and it smells really nice.
There are a few times the trail crosses a small creek. Be aware of this: You'll get a little muddy and perhaps wet depending on how much the creek is flowing and how good (or not good) you are and leaping from shallow are to shallow area.
The short CCC Crossover Trail is also open. It's a super quick hike, but still interesting. The stonework is fun to look at, especially since portions of it have been overgrown with moss and lichen.
The park is rather quiet. I know there were a lot of people there while I was, but I didn't see many others. (Perhaps they were all near the camping areas.)
At the end of the blue trail there is a scenic overlook, which is a nice place to watch the sun set. You can also get to this area by driving on the main park road.