So I've realized in both lucids and non lucids that I often encounter scenery that looks so familiar yet I've never seen it. Sometimes I even know where to go. Do you think this is a sort if dejavu in the dream state, or simply a place I've been in a dream before that I can't remember, but isn't completely off my subconcience?

P.s. not limited to scenery. Also includes dc's and dream ideas/inventions