digitS'
Garden Master

This footprint was only about 7" or 8" and I came across several of them on my walk today. I'd left the library after a short visit thinking about the books and the different people interested to read them. It is difficult to read much here - mostly a matter for the imagination.
After I'd crossed 3 prints and about twice that many of a somewhat larger footprint from a shoe, I found some printing on the concrete at the corner. The company that put the sidewalk down had identified themselves with the year: 1909. I'd guess the little girl or boy who made this print was about 4 or 5 years old.
On @frontiergirl53 's thread today, @Ridgerunner wrote about using straw in brick. It made me think about the carbon dating of masonry. Straw would be easier to date but a new technique has been found to date air trapped within masonry (brick, mortar or concrete) - no straw needed. I don't suppose it could precisely date a century old footprint in concrete with too much accuracy but we can leave that to future generations and their interests and imaginations
Steve