Looking for the name of a prehistoric themed movie which aired on cable prior to 1988. Two scenes that are remembered were of a cave boy with his mother and the mother falls off a cliff or the earth opens up and swallows her. They are reaching for each other and crying before she falls and dies. The second scene was of the boy wearing the skin of some animal as a vest and he is being scratched on the chest by a tiger or similar animal. Anything some familiar?