One Million Years B.C., whatever its merits when one looks at it today, demonstrated Hammer was adept at turning its hand to genres other than Gothic horror and were equally as willing to embrace science fiction, psychological drama, crime noir, comedy, swashbucklers, and epic period adventure with its customary zeal.
A full review of the 50th Anniversary Blu Ray release is here: www.framerated.co.uk/one-million-years-bc-1966/