It boggles the mind to imagine how one might hypothesize that all of these events could have taken place in just the past 4000 years. Even had the pit formed 4000 years ago, how did hundreds of carnivores become trapped in such a short period of time? There are sediments separating many of the bones. These sediments are best interpreted to represent deposits between times when animals died and were slowly buried. These processes of sediment deposition and accidental falls would have taken time. At most a few animals per year would get trapped. But at that rate it would take tens of thousands of years for the lower reaches of the pit to be filled with sediments.