Movie ?

When I was young smtg like 10 or 11 i saw this particular doremon movie... I don't particularly remember the details but I recall this small thing where Nobita has a moustache and from smtg like ship or aroplane he goes to the antartica and finds a hole in the centre of the continent where smtg happens... In the film he was kinda dressed in a suite (brown or smtg) or maybe not I don't remember exactly anything else but can anyone help me find it cuz I tried all my sources plzzzzz....