Gentle Giants of Galapagos
The British Broadcasting Corporation - BBC for short - has an excellent track record of making wonderful wildlife programs.
One of the very best presenters is Sir David Attenborough. He has spent almost his entire life making programs about wildlife.
The BBC have a comprehensive website and one section of it is devoted to wildlife films. This includes three videos of the enormous tortoises on the Galapagos Islands.
You can see them here...http://www.georgiawildlife.org/Assets/Documents/Wildlife_Rehabilitator_List.pdf