The meaning of Portal in dream | Dream interpretation
To dream of an open portal symbolizes a new opportunity.
If you walked through, you will take the opportunity.
If you have a choice of many portals in your dream, this represents a difficult decision you must make in real life.
If you are unable to find the portal to get out of someplace, your dream is telling you that you’re on a “road to nowhere” in your life - you must make changes in the direction your life is heading.