text:  when a colleague of mine sampled it in 2012. They keep its exact location a secret, even to professional endocrinologists as myself, because they don't want people to start visiting it or to take souvenirs from it. So I don't know where the tree is exactly, but there's a whole national park of this kind of tree. Many of them are more than 4,000 years old, and that you can go visit, and that I have visited. It's a magical place.