How to Use These Stairs?

There are many amazing and strange things in this world, some created by Mother Nature, and some by man. We look some of them amazed and breathless, and some confused. These stairs belong to the category for "The confusing". With no problem we can ask the question: what is this for? Although we all know what is the use stairs. Confusing situation like this is always the best to understood as a work of art or a good joke. And let to alpinists to climb on this stairs. :)