Five in a row. I took several shots of children playing games with stones at a recent history day at school. I uploaded several a while back which I was not really happy with and so took them down. Moira [mrswoolbill] suggested that the left side of one would go with the right side of the other - and here it is, and I think it works better.
I've layered it with the texture from a tombstone to give a hard/rock like appearance - hence the title
Many thanks to andylea and pluckyfilly for their User Awards for Weeding. Thanks also to mrswoolbill, bricurtis, Annettep38, and Niknut for their helpful comments. Also thanks to Mark Kent for his GEA
Back to work today - last half of term and "I retire next month" has a great feel about it