From memory, I think it was an adventure movie in the 80's. It was in English.
As I remember watching it the first time while growing up. The only scene I can remember was when both the actor and actress (who's wearing a long white dress) are trapped in some sort of a cave or a space filled with water and there's a lot of small snakes and crocodile swimming past them while they tried to escape.
I have been searching for this however no luck until now. Anyone?