Is this the biggest boulder in the Appalachian Mountains?
33:08
How did an ancient meteor impact help America spread westward?
25:28
How & When the Appalachian Mountains Formed & The Rocks Found Here! GEO GIRL
19:19
The Appalachian Rainforest
29:02
How did wrinkled rock layers form these incredible mountains?
27:20
Why Don’t Railroads Need Expansion Joints?
24:22
Why does Appalachia have so many mountains with coal under them?
32:58
This incredible gold mine has a crazy geologic story
44:22