What a beautiful day! In a week or two the whole area will be green and it will be even better. Right now all the waterfalls in the area are going too so it's a nice drive along the river. The trail getting up on top of the rock is a bit dicey in some spots, it would be a good idea to bring trekking poles. Going down is worse than coming up, I am fit and have good balance and even I was on all fours hugging rocks on the way down just so I didn't fall.
Plenty of wildlife, I saw a marmot, several hawks, and two herds of deer on top of the rock. On your way out of the park if you turn left on the highway and go down the road just a little bit there's a pull-out on the right where you can get right under several waterfalls (if they're still running.)