September 2014. This 18-exhibit complex opened in 2009. It replaced the majority of the former area known as Horn and Hoof Mesa. Its theme is an exploration of the extinct animals of Southern California, interpreted through living examples of their descendants or similar animals. The complex is a long path that can be entered at either end. The Western entrance begins with a path called Hortons Way, named after the elephant character in a Dr. Suess book (his family made a major donation to the exhibit in his memory).