A vast titled plain, the land rises gently until it ends abruptly at the foothills of the Rockies. This region extends, in part, on the Alberta Plain and on the Saskatchewan Hills. This region rests on a thick mantle of rich, black soil that is cool and moist, some of the most fertile in the country. Speargrass, wheatgrass, blue grama, rough fescue, bluebunch fescue, red fescue, needlegrass, little blue-stem, grass is the single characteristic common to the mosaic of habits making up this region.
Mixed prairie includes both tall and short grasses.
Today only remnants of this rich fauna remain in the most remote and driest corners of the region. Here, species endemic to the prairies, such as the pronghorn antelope, black-tailed prairie dog and plains pocket gopher, can still be found. This region is represented by Grasslands National Park. Grasslands National Park , Sask. Dinosaur Provincial Park, Alta.