Preserved in the park are the ruins of his trainer's cabin and the stabilized ruins of his own homestead. Information on Thomas F. McKinney and the history of the park's land use is interpreted in the Smith Visitor Center. Camping, hiking, mountain biking, road biking, picnicking, fishing, and wildlife observation are other activities. Swimming is now allowed in Onion Creek; call 512/243-1643 for current creek conditions.
Access to the Homestead Trail is across the top of Lower McKinney Falls, which means you have to long jump from boulder to boulder. If you want to avoid that, then go down stream about 50 yards but be prepared for the water to reach mid-calf. This summer, the park wasn't allowing dogs in the creek. It's an okay trail. There's black land under foot so it's not too rocky.
Hiked the Onion trail. Long boring paced loop. But I did see a nice sized buck in the middle of the trail. We just stared at each other for 15 seconds. Really cool. I also hiked the rock house trail. Loved seeing the state champion cedar tree.