Very little is known about prehistoric hominid cave dwellers  However, a recent study of skeletons of these hominids has revealed an important clue about their daily activities: skeletal fractures present are most like the type and distribution of fractures sustained by rodeo riders
Ttherefore, it is likely that these cave dwellers engaged in activities similar to rodeo riders -- chasing and tackling animals
If direct evidence as to the cause of a phenomenon is available, then indirect evidence should not be sought.