The hiking trails up to the tops of the sandstone rocks partly consist of transparent and steep metal stairs or even ladders. If you are scared of heights, better avoid. Climbing up is already tough, the descent is much, much harder.
The stairs and ladders are solid, don't sway and provide a good grip, so they are in theory safe - unless one behaves like an idiot due to fear, panic, and/or vertigo. Fear is what makes it dangerous. Better avoid if you know that you have this problem.
I learned that, in the eyes of the locals, "hiking" means an activity that necessarily involves climbing ladders up and down vertical rocks and paths along the edge of the abyss. What I consider a hike, i e. paths that can be walked without having to use your hands to cling to rocks or handrails, is called a "walk". In case you are (like me) scared of heights, better ask twice before getting stuck on top of a rock...