The bark of a giant redwood tree is so spongy and robust that you can punch it without damaging either yourself or the tree, and its incredible thickness makes the tree essentially fireproof. Redwoods can live for hundreds, even occasionally thousands, of years, withstanding numerous fires that would burn and shrivel other trees. The tallest known tree in the world is a giant redwood, named Hyperion, located in California. In 2006 its height was accurately measured as 379.1 feet, but it’s still growing. It’s estimated to be between 600 and 800 years old. The redwood in my picture isn’t anything like as tall as Hyperion, but it’s still an impressive specimen. I looked up at it in awe yesterday during a visit to Dawyck Botanic Garden in the Scottish Borders.