Just getting to grips with this technique... needs some refining obviously

very impressive Dan, i love the contrast of light shining round the dark clouds, and the sky in the last shot looks like its from a movie/tv program when they fast forward the clouds building up before something evil happens

could you explain how you did this ridge?
what is HDR too?

HDR stands for High Dynamic Range. You merge 3 photos ranging from a low to high exposure. Then you can adjust tone mapping for a more natural or surreal effect. It intensifies light or luminescence as you have different grades of shading and lighting in each photo

Really impressive mate, you don't need any special equipment for this?