These pieces of dead wood are I think the remnants of old gorse, there are thousands of scraps that litter the heathland floor.
I think they create interesting shapes and if you look closely you will see something different. In colour I don't think they are quite as interesting or well defined but in black and white you can see much more depth and texture.
I wonder whether you see what I see...
In the first two images I see a sleeping dragon and in the third image I see the face of Angry Yoda (from Star Wars of course) or perhaps one of the Gremlins from the movie of the same name.
