Can anyone tell me how are these made
Looks like some kind of a fractal program like Kais fractal designer or something with a bevel attached to it
You can try making a selection and do Transform with Copy.
For the 3 D effect, I would try Filter>Render>Lighting Effects with Mountains checked or play around with Layer Styles..
Here is one tutorial to get you started.
10x for the help
and for the tut too
i've been looking for that kind of tutorial for some time