When Did Ancient Humans Begin to Understand Death?

The dead lay in a cave, over a quarter-mile from daylight. Investigators counted remains from at least 28 individuals. The bones were fractured into nearly 7,000 pieces, mixed with bear fossils and mud — and a 6-inch, teardrop-shaped handaxe.
DNA analysis identified the individuals, dated to approximately 430,000 years ago, as early Neanderthals — our evolutionary cousins — or their ancestors.