We are on a camping trip in the south, even though it’s the middle of October. After a starry night layered in knitted caps, mittens and thermal leggings we are out and about for a long walk in national park De Meinweg. So is everyone else, apparently. Still it is a beautiful day to be on the heath. Somewhere in the sand we find a wasp. He is long gone, so I gently pick him up and lay him down amongst the flowering Erica.