I meant "untamed" as in wild, pure and untouched nature, forests, mountains, just like you described it. And by "huge parks" I had city parks in mind, because in Greece we don't have vast areas like Central Park, for example.
Now that you mentioned those expedition reports, you just reminded me of this movie: The Lost City of Z
Oh, cool! Thank you. I haven't heard of that movie. And I can watch it through amazon prime. I just clicked it underneath and my site opened. Wonders of modern technology! LOL.