Great little park with several caches.
We recommend parking at N30 24.652 W097 43.119. It may be a slightly longer walk to the cache site, but it should be easier than bushwacking from the main park. (Note from Buckandi: this no longer applies, imho.)
Know before you go--you are likely to encounter poison ivy. If you know what it looks like you can get to and from the cache without a rash. (Note from Buckandi: this also no longer applies, although it never hurts to be on the lookout. Also, be prepared for thorns and mosquitos).