Dhe primeval elephant, the skeleton of a mastodon, has a nickname: American Heiner. Why is the giant creature called that? The inhabitants of Darmstadt are known as Heiner – and in Darmstadt, in the Hessian State Museum, this mammoth skeleton has also been at home for a long time. This mammoth Heiner is American because it was tracked down on the distant continent, dug up with great effort and exhibited first.