What do you feel during these visions? Is there a “connection” between you and the scenery?
Like Innocence_Lost I think there are various explanations. But I think it is not important what exactly it is. You are interested in this and that means it has a relation with your present life. Perhaps it is just a message from your subconcious. If you like meditating, then go and find out about this connection in meditation. Listen to what your heart tells you.