Ötzi and his killers might have been up there looking for the impact site, there might have been a mad rush to find the impact, they might have seen it as some sort of holy item worth killing for.

There was after all a sun cult in Europe at this time.

And we have recovered an iron dagger made from a meteorite in the 14th century BCE. So this phenomenon of tracking a meteorite impact site and finding it might go much further back in human history.