I remember a scene from a late movie from around 1980. There was a group of kids trapped underground in a cave or something. They were trying to find a way out but had to cross a portion of the tunnel that was waist to chest deep in water. I remember them carrying their clothes over there heads. That’s all I can remember of it. I have not seen it since, so it probably wasn’t very popular. The version I saw was in English, but it may have been dubbed, as some other movies I watched from the same time period.