Introduction to the Climbing Ladder: The Climbing Ladder is a very narrow section of the Great Wall made of stones. This section of the Great Wall is very different from the common tall Great Wall. It is like steps, one step at a time, rising with the mountain top, leading straight to the top of the old mountain and connecting with the blue sky. Looking from a distance, it is like climbing the ladder to the heavenly palace. Therefore, people call this section of the Great Wall the "ladder to heaven."