Pavement carving in Liverpool

I was in Liverpool on Sunday having a very nice lunch and on teh way back to the train station we noticed these 'carvings' in the flagstones. Unless they are recent I have probably walked across them several times and not noticed them!

I was a bit distracted at the time and my mind was on other things (I took 4 shots with the lens cap on before I realised what was wrong!!) so sorry for the quality but I was amazed by the carvings - and tha fact that they are labelled with the langitude and latitude rathter than an 'english' description - very creative - and makes you think about the actual location.

P.S. off net for a few days - hence this was back blipped - which makes me wonder -at what point is the inability to blip reliably justify carpet bombing BT's head office??????