애팔래치아의 탄전은 대부분 역청탄이고 아래 음영기복도와 함께 비교하면서 관찰하면 의외로 습곡지역에는 탄전이 없고, West Virginia지역쪽으로 발달했군요 Though the practice of mountaintop removal mining (MTR) is perhaps best-known in West Virginia, it is one of the main drivers of forest change in the entire region of central Appalachia - along the Cumberland and Alleghany Plateaus in eastern Kentucky, southern West Virginia, southwest Virginia and eastern T..