I very rarely draw landscapes but I had to do this so: this is basically a one year old drawing I forgot to upload and shows the Crystal Mountain Range, mountains made of a material similar to crystal indeed, stronger and lighter than metal. It's black and white but the colors should be mainly black with blue and white accents somewhere.
This is a place you can find in my fantasy world, where wraiths live, and the citadel up there on the top is basically the castle of their so-called king.

These mountains are huge.