The Chronicle has launched a new weekly Travel newsletter! Sign up here. Enter your email at the top and check the box marked “Travel.” The crown of Hyperion, a roughly 600-year-old coast redwood tree, rises more than 379 feet from its base on a steep slope in a remote part of Redwood National Park, just north of Eureka in Humboldt County. It’s the tallest tree on earth, and I was determined to go see it. My motives were pure, or so I thought.