That indented imprint on the flat surface and wrinkles all around made me think it was stuck between a hard place...And well...another hard place. It was one of the hardest shelled eggs I've ever seen. Yes! Like it was double shelled over just the yolk. A real anomaly of an egg. Chickens. Always gots surprises for us.How strage Mumsy! Thanks for posting these... when Ifirst looked at it, I thought it was a shell less egg. Almost like it was stuck up there for a couple of days! Maybe it got extra shell!