These Giant Stone Spheres Took 4 Million Years to Grow on the Ocean Floor
The mysterious spherical boulders scattered across New Zealand’s Koekohe Beach took 4 million years to form on the ancient ocean floor through a remarkable process called concretion. These natural sculptures reveal how patient geological forces can create near-perfect spheres from seafloor sediments, offering a glimpse into deep time and the incredible artistry of Earth’s geological processes.
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