As states go we’re prolly medium sized. There quite a diversity of geology and land types though. East side is green, foothills of the ozarks in the NE and Quachita mountains in the SE. Central is a big N-S band of blackjack forest called the Crosstimbers. And western OK is flat wheat country much like eastern Colorado orwestern Kansas. Most folks know of the latter, thanks to our Dust bowl era.
BKB