You can just imagine the Missing poster for this one. "Lost: Entire wooden staircase. Last seen in the vicinity of woods. Dearly loved family pet. Answers to Steppy." All jokes aside, the sheer mystery of how this got there is going to have us sleepless for weeks. This is like something Nancy Drew and her gang would try and solve.
Let's see if we can beat them to the bottom of this mystery. We've got a couple of theories: firstly, that there was a house there once but the stairs outlived everything. Second, that there used to be a hiking trail there. Third, that the trees are starting to build themselves. And finally, that someone took their stairs for a walk in the woods and let them out of their sight for just a split second.