Amazon.co.jp: レゴ Star Wars AT-AT Walker 4483 [並行輸入品] : Toys & Games
I have seen some say this was never released but was in some kind of production. I am 100% sure i saw this on an shelf in toy-store called "leklust" in sweden.
LEGO Yellow Ramp 8 x 8 x 4 (75538) | Brick Owl - LEGO Marketplace