When I got to the 5th hunebedden yesterday I found that the lens hood was missing from my camera lens. I know I'd had it at the previous hunebed. So had obviously lost it somewhere between taking the photos there, and where I was. This morning I went back to the last hunebed I was at on the way to the campsite. And found my lens hood sat on the ground where I had packed up my camera. Phew.