Dino tracks!
We went just yesterday to this state park. It was $5 per adult and kids 12 and under are free! We went just for the day. There are a few trails down to the river where you can see the dinosaur tracks. When the river is high (it isn't currently), you can swim several places. The first track was a bit treacherous. Ok, easy for the kids, treacherous for me! We swam at the first tracks site. Bring lots of water, it's hot! Swim shoes would be a good idea too. The rocks are slippery. We could see all the tracks, but if the water was up, you might not be able to see them. It was fun!