Teaser No More!

The minute I zoomed out from my teaser picture I realised it was obvious what it is! So I took a blip of another interesting section as I have walked past this a couple of times each day for nigh on 30 years and have never noticed the detail or the craftsmanship - see how observant blipfoto makes you? I will reveal the full extent (or as much of it as I can fit in my lens) sometime next week.