Imagine a rock that lays eggs; giant stone spheres that seem to hatch straight out of the earth itself. It sounds like something out of an ancient myth or a tripped-out journey through the desert, but they’re a perfectly natural phenomenon formed through a secret recipe of water, minerals, and time.

Scientifically, they’re known as cannonball concretions. They're formed when mineral-rich water drips through the layers of rock into empty pockets within the sediments. The minerals gather around a solid nucleus, like a fossil or some organic material, and act like glue, binding small sediment particles together. Over time, this hardens into a solid shell, and the process repeats, adding layer upon layer around the nucleus until a large, round boulder is formed.

These geological gumballs are

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