I'm playing the video of the footprints and am suitably impressed.

My only problem is the background narration, which seems to have been added later by the younger guy. He recites the script as if he were reading a fairy tale to a young kid, over EMPHASIZING certain SYLLables and words 'what it might be LIKE to meet a giant GROUND sloth!"

   I will finish the program tomorrow and try not to dwell on someone telling how me INTERESTING his expeditions are.