This may have been only a trailer for a movie, but I remember a group of people walking in a desert and coming across some sort of bunker with glass doors. Some, if not all of them, walk inside and the doors close, and then sand may have covered the door. I saw this sometime within the past 4 years, and it was definitely in color and in English. It was also on TV, so it might have been a trailer for a TV show. I’d really like to watch it, whatever it is, so any help is appreciated!