Locked Door

So, the other night I had this dream that I was walking through a hall, only it was out in the open. No roof/ceiling, no walls. Even so, I knew it was a hall. I came to a stop.
I look to the right, and there is a doorway with no door. I can see it in ancient looking pots on the floor. To my left, there was another door. This door was huge & I could tell it was a very heavy, wood door. I had to walk up a few steps. So after I walk up the steps, I try the door. It is locked. The lock keeps appearing & disappearing. I knew I could unlock it if I chose, but I was scared. Scared of the unknown... So I didn't open it.

After I made the choice not to open it, I woke up.