Remembering Tim's advice, I went for a coin to give an idea of scale..
We thought they might be lizard eggs and Colin's search on the internet confirmed this. In fact the picture he found had also used the one centime coin for scale!
There are lizards all over the garden (and the house) in the spring and summer
And sometimes we find them in the most unexpected places, like the top of the curtains in the living room...
I covered over the eggs with soil again and can only hope I hadn't disturbed them too much.
