AMMONITES IN CONCRETION

At first glance they look like ordinary stones—rounded, weathered, unassuming. But then you notice the delicious hints: a spiral ghosting through the surface, a faint rib, a seam where time is ready to split wide open—it's magic!Ammonites, long extinct cephalopods, so often appear this way because, shortly after death, their shells became chemical centres of attraction on the seafloor.