Scafell Pike is made of volcanic rock as is the majority of the central part of the Lake District. Sedimentary rock is well known for forming layers as the pieces of eroded rock and sand sink to the bottom of the sea. But there are layered effects in volcanic rocks as well. Ash and volcanic bombs are fired up into the air and settle under the influence of gravity. These are the layers shown and the rock type is called a tuff. I'd be interested to know how much the wind affects the settling of the layers. You can see that there are twists in it. Then note that the layers are vertical. Think of the forces in the crust of the Earth that must have been necessary to make horizontal rock go vertical.
