Used to watch TNG and Voyager as a young child, and have regularly gone back to it since. However there's one that I have a particularly strong memory of that I've never been able to place and don't know if I'm misremembering. I think it must have been TNG as I'm sure I remember the character in question being Geordie. My very faint memory is of them walking on frozen bodies, and then Geordie or possibly another character collapsing and their own breath freezing. For some reason thus image really freaked me out as a child, but it's one Ive never since been able to place I'm terms of which episode it was. I may be misremembering as we're talking something I watched possibly 20+ years ago, but any suggestions as to what I'm thinking of would be appreciated.