I'm not sure what makes you all think that the garden in MN is in Aslan's Country. It's in the far west of the continent Narnia is on. Aslan's Country is in the far east. There's nothing in the books to indicate that Aslan's Country curves around and joins the Narnian country.

^^ west and east.....ooops! I think I am really bad at Narnian geography! and West and East are totally opposite *bangs head on door frame*
thanks for showing me my error Bookwyrm!

It wouldn't really matter if one flies West or East. The Garden in either MN or LB is obviously a part of Aslan's Country, and Aslan's Country is as much a Spiritual Place as it is physical. It is outside the normal rules of Time and Space as indicated in the Last Battle as the Garden also contains another New Narnia within it's walls, and The Garden intersects many different points of the Physical World. In a way it is thus similar to the Wood Between the Worlds.

The fact that Dragon Eustace doesn't recognize the mountain despite having flown all over Dragon Island is an indication that he's left the Island and is indeed in The Garden. So it would be cool if it is in the movie.

GB

Wow that's a very nice catch there A_Narnian_Ship.
I agree with Glemstorm The Great though. I don't think the crew will notice something like that unless if the director really read the book over and over instead of skimming it like others.

I always thought Eustace's un doing was at the island but it could very well be that Aslan pulled Eustace into his Country.