Our last day we drove up to the mountains to take a horseback guided tour of the rims of (active) volcanos. Again, this was where we felt like we could be on Mars or some other planet. And since we were in the mountains (and riding horses) it helped to where layers, and have a rain jacket, and jeans (or long pants).
We saw a Galapagos hawk, grasshopper, and more birds, etc. And got to feel the steam coming from the ground from the volcanoes.