 But you're skiing, snow skiing. And then you go down to the beach and go surfing, boogie boarding, or like I do, just get that bronze golden tan. What's that? What's that? You know what? Let me tell you a really fun thing at Volcano National Park is the Thurston Lava Tube. Now, what it is, in Hawaiian it's called Nehuku. It's a subterranean tunnel tunnel.