This Oklahoma forest region is both the focus of the softwood timber industry and increasingly a tourist destination due to its mountain streams that support rainbow and brown trout fisheries. This Oklahoma forest region is both the focus of the softwood timber industry and increasingly a tourist destination due to its mountain streams that support rainbow and brown trout fisheries. Shin Oak woodland Mixed-grass prairie Oak-Hickory forest Oak-Pine forest Cross Timbers (Post Oak-Blackjack Oak) woodland Mesquite grassland Shortgrass prairie Tallgrass prairie Juniper-Pinion savannah