Appalachia and the Ozarks

Colorado and the Bypassed East definitely have some topography in common- although I must say that the Rockies are much more impressive than those Appalachians...

Rockies

Appalachians:

Both are beautiful- don't get me wrong. I just prefer the daunting, sharp, jaggedness of the Rockies to the smooth, hilly Appalachians.

They also have another aspect in "common": which is coal and mining.

Both regions have dealt with the dangerous job of mining- according to the Bureau Labor Statistics,  "Employees in coal mining are more likely to be killed or to incur a non-fatal injury or illness, and their injuries are more likely to be severe than workers in private industry as a whole."

This common industry these two places share helps create a similar culture in a way- the people in these areas share similar experiences (sometimes traumatizing) that can create a similar culture in its own way.

Sources:

http://www.bls.gov/iif/oshwc/osh/os/osar0012.htm

Regional Landscapes of the United States and Canada