In the rainy season the barriers are submerged in succession, the reaches are filled and the plains of the lower Senegal are changed into immense marshes.
Next the plains of eastern Europe were lost, then the AraloCaspian region, southern Russia and finally the valley of the Danube.
The hour of maximum is earlier for the mountains, thunder being more frequent there than in the plains between 8 A.M.
Along the flood-plains of the larger rivers are fertile " bottomlands," but the ruggedness of the plateau country as a whole has retarded the development of the state, much of which is still sparsely populated.
The general elevation in the south part of the state is much lower, and large areas bordering the Paraguay are swampy, partially submerged plains which the sluggish rivers are unable to drain.
How would you define Plains? Add your definition here.