I saw this movie (from the 50s?) on TV as a child in later 60's. I recall it being b/w. I recall somewhat clearly a number of 'explorers' on a distant planet moving up a narrowish path/ledge along the ...
What is this 1950s sci-fi movie about a boy's dream? I remember its ending where you are convinced that all the action in the movie turns out to just be a dream that occurred when a boy fell asleep ...