Here at post 30, behind you, you have access to the creek itself. There is a rock there that I like, because if you climb it and sit in the small ditch, it's actually pretty nice and if you just sit there for a bit, it can be relaxing. In the creek, there are fish and other animals, and some times there are small fish too.
Also, this plant in front of you is the California Dutchman's Pipe because it resembles a smoking pipe. Pipevine Swallowtail butterflies live here. These butterflies are the black with blue and orange spots ones. The Dutchman's Pipe also has a smell that attracts gnats in order to pollinate.