Okay, seems I am having no luck with finding the first film I saw as a kid. Here is another one... Color I'm guessing made in the 60's Explorers on Mars (I think it's Mars, could be Venus) They discover a dead civilization The scene I remember is a great hallway/tunnel/chamber where they are looking at the corpse of one of the Martians through dirty glass (like a sleep chamber but I think it was meant to be a crypt). The floor is covered with sand, as the civilization is in ruins. The Martian looks insect-like (Praying Mantis like head). They're discussing the extinction of the civilization and wondering what they were like while standing in front of the dead Martian. I don't think they ever see any live Martians in the movie, but come across their technology. I've looked at clips of THE ANGRY RED PLANET and it isn't the film.