The human legacy left in the rock is the rock that is missing. As you travel Eastern Kentucky and to a lesser extent SW Virginia, there are massive cuts through the solid rock. These cuts are often several hundred feet deep and wide enough to accommodate a 4 lane hiway and often a major cloverleaf intersection.
The geology is there for easy viewing. The multihued strata tell the tale of the eons required fot the sedimentary rock to be laid down.
One spectacular cut is on US 23 after you cross the mountain from Pound Virginia and head down to Jenkins Kentucky. The rock removal in this massive cut and intersection is mind bobbling.
Nearby, whole mountains have been sheared and truncated by stripmine operations. Future geologists will be amazed by these huge operations. They will also stumble on the mine shafts and coal mines that go on and on and on.
Good points! Of course, what would happen instead is that the subsequent natural erosion will be used as an alibi against admission of the obvious fact that these large quarried structures are artificial. ;’)