found this in my search. hadn't seen it before: (
Miyamoto Shrine)
I: Do you get inspiration from movies?
SM: No, I never see a film and then say "I'll make this now". But... whenever I'm stuck on something, sometimes I just suck a movie in like a sponge. (laughs) I'm not saying that imitating something is a bad thing. If you're just ingesting it like a sponge, then you still have the ability to think it over for yourself. It becomes part of you. If you stand in the same spot as everyone else, then you'll lose out.
...and another new one that goes against my original statement: (
Miyamoto Shrine)
Superplay: Apparently the tale of Hyrule were created by Kensuke Tanabe, and he was very inspired by Tolkien's books. How much of the original manuscript was written by him and what were your ideas?
Shigeru Miyamoto: Are you still talking about the the first Zelda game?
Superplay: Yes.
Shigeru Miyamoto: Tanabe wasn't part of the Zelda team until A Link to the Past. He wrote the story to that and Links Awakening.
Superplay: So it wasn't him that wrote the original manuscript?
Shigeru Miyamoto: No, no... All ideas for The legend of Zelda were mine and Takashi Tezukas.
Superplay: Okay, so what influenced you then?
Shigeru Miyamoto: Books, movies and our own lives. Legend of Zelda was based on my childhood.
off-topic, but interesting (from the same interview as the last quote, which is also the interview in which he mentioned the master timeline document for the first time)
Superplay: The sequel, Zelda II: Adventures of Link was a very different game. Why was this? And why have you never done anything like it again?
Shigeru Miyamoto: It was my idea, but the actual game was developed by another team, different people to those that made the first game. Compared to Legend of Zelda, Zelda II went exactly what we expected... All games I make usually gets better in the development process, since good ideas keep coming, but Zelda II was sort of a failure...
Superplay: So that's why the third game looked like the first one?
Shigeru Miyamoto: Exactly. We actually see A link to the Past as the real sequel to Legend of Zelda. Zelda II was more of a side story about what happened to Link after the events in Legend of Zelda.
....................................../AoL
ZOMG TRUE TIMELINE = LoZ--LttP
back to seriousness, I'm seeing a trend of Miyamoto avoiding any "where do you get your inspiration" questions while searching through mshrine. He often says he gets it from himself or from his games, as in this one:
Fielder: Where do your ideas for the games and the characters come from?
Miyamoto: I wish I could find somewhere where I could get ideas, but unfortunately, I don't have any specific place. Rather, in my case, I often come up with ideas while I am talking with my programmers and creators.
I didn't see the specific quote I was looking for about exploring the woods though. I think that might actually have been in an Iwata Asks.
--just saw it on Zeldapedia, but of course they didn't give a source...
His 'not pulling from specific cultures' quote also escapes me, but I think I've provided enough supplement above.