Just to clarify, Rosie and Jim wasn't created by Pat Hutchins. It was actually John Cunliffe, the same guy who did Postman Pat. And yup, they never did dubs for it. Purely English speaking which I guess kinda added to its charm in other countries. Straightforward but somehow really engaging …
Hate to be 'that guy' but, mammoths and Stone Age... geographic locations would vary, not just time. And the daily survival skill shifts? We don't have autopilot for that. You'd last what, a week max before time got the best of you?