I believe I know (have seen) the movie you're asking about. As long as the men stayed on the rocks they were safe. The sand creature had long tentacles or such and at one point the men crossing the sand ocean were trapped on a small rock, just offshore from where their gun was. I think the movie revolved around the 2'nd crew to go to this planet. They were trying to figure out what happened to crew #1. It was in color, maybe made in the early 60's. I can't recall the title, maybe it'll come to me. <div class="Discussion_UserSignature"> <p>-----------------------------------------------------</p><p><font color="#ff0000">Ask not what your Forum Software can do do on you,</font></p><p><font color="#ff0000">Ask it to, please for the love of all that's Holy, <strong>STOP</strong> !</font></p> </div>