Yes, I know it looks like an expanse of beach pebbles. It is supposed to looks like an expanse because that’s exactly what it is. After all… an expanse of beach pebbles cannot look like a bowling green. I wonder why? However… maybe you should reach for your glasses… because there’s a strange pebble lurking among the others. So… if you don’t believe me I’ll show you the same photo in colour… just to prove my point!