@onceuponatime, behind the mystery door you see a wise man pointing you to continue to travel on the 'Road less traveled'. This is the door of wisdom where courage is needed to open. While it seems fearful and mysterious, all your anxious thoughts are removed when you see this road that is paved with golden stairs leading you to another kind of life that we are not used to see in this world. It is the world beyond. In one of the photo, you have a man in the wheelchair. They represent old people who had gone on before us and are waiting for us on the other side. Once you open the door to get through the mystery road, you won't want to come back because everything on this road less travelled leads us to a real paradise. But on the other hand, the wise man there allows us to come back to the door to tell our family what the mysteries are. That wise man is 'me' and now that you have visited this eternal bliss, you can tell this story to others.
Rosa
(BTW, I want to let you know that I became a dolphin today. Do you remember how I came into Steemit last year and I posted about celebrating my birthday with my hubby and I asked you guys to guess the age? I want to thank you so much that you took interest in my post and gave my hubby a big birthday present for upvoting that post. That kindness of yours are forever embedded in my heart so today I want to know I made it to become a dolphin.)
Thank you for your comment and interesting interpretation of what's behind the door! There is much wisdom in your words. Unfortunately I can't consider it for one of the prizes because you didn't follow Rule number three: