Dreaming about a corridor means that we are going through some difficult time and we might be feeling lost or confused. This can also represent how isolated we feel from others, especially if it feels like no one cares about us or there’s no one for us to walk with.
As for additional meanings, we should examine other details from the dream. For example if you are walking down a long hallway, it may refer to an approaching mental deadline or it could be linked to what you need to do next in the waking hours life.