Burney Falls is one of California’s biggest surprises. It’s no wonder 26th President Teddy Roosevelt dubbed it “the eighth wonder of the world.” The broad wall of water booms over a mossy ledge, splashing down the fern-covered face, tossing gushers and shards of rainbows left and right, finally plunging so hard and fast into a clear pool that you can see flumes of air bubbles reaching deep below the surface.