Wikipedia entry "Cumberland Gap"

"Middlesboro (Tennessee) is the only place in the world where coal is
mined inside a meteor crater. In September 2003 it was designated by
the Kentucky Society of Professional Geologists as a Distinguished
Geologic Site."

I recall reading that there is another small crater in Tennessee that
had traces of occupation of prehistoric occupants. An interesting
choice? Look at the "hare in the Moon" (Navaho).

George Myers