This is an unlisted link on YouTube. This documentary originally appeared in 2011 on the Discovery Channel documentary series, 'Curiosity', season 1, episodes 7 and 8.
Morgan Spurlock, the same guy who did 'Super Size Me', puts himself and 9 others into a real life test of living in the Ice Age. It was a monitored experiment, with the people being observed by an archaeologist, an anthropologist, a doctor, and a primitive skills expert. Much to the shock of those monitoring the experiment, the participants wind up actually killing an elk with an atlatl and dart.

I Caveman - YouTube