Rocks cracking apart due to global warming remains an unpredictable geologic event, but one of the rare places where it can happen is at the heart of a 150-acre preserve in Lincoln County, North Carolina.
Known locally as the Beth Haven Flatrock, the granite outcrop represents what was once the volatile underside of the Charlotte region.
The rock is between 250 million to 350 million years old, and formed when a magma intrusion got trapped under a large mountain range that rivaled the Himalayas, geologists say…