It shouldn't surprise that when we took the exit off U.S. 167 at Calion (near El Dorado) that in the five or so mile drive to Four R Marketing, we saw five pump jacks producing some of the last barrels of oil the fabled Smackover formation has to offer. It's also fitting that the curvy drive through neighborhoods and hollows is nestled in the south Arkansas backwoods criss-crossing the Ouachita River.