That's a good way of disclosing the surface of the surface of a stone but just highlights the plight of the individual rock - almost toppled over. Have you had any contact with the county archaeology unit over it ? The colour of the sky has shifted, in the digital pic. The glow from city light is orange and has shifted to red, perhaps because of the long exposure time. 'Therefore' this image should be placed in the genre 'Magic Realism'.