In 1991, collector Günter Rumer discovered a projectile head, which he donated to the museum, at a gravel mining operation in Billwerder. It was made from a bone chip of a larger mammal, likely a horse or elk. The hunters of the Ice Age Hamburg Culture used such bone points as spearheads to hunt reindeer. The point from Billwerder is, so far, the most ancient piece of evidence of a long-range weapon from Northern Germany.