Just HOW do they know they were doing this for amusement? Was the local boardwalk shut down for repairs? Too early in the year for the water park to open?
Science, you know.
This study was obviously funded by the Kumbaya Research Institute. Because life was so easy and everyone was mellow 14000 years ago. All their wants and needs were effortlessly provided thru grants and trust funds which allowed them to have all the hookers, blow and weed they could ever want. Oh, I’m talking about the researchers.
No, this family was hiding. Likely fleeing from an attack upon their settlement. The attackers would want to hunt down all the survivors to prevent warning others or the possibility of eventual retribution. A practice still followed to this day.