The northern lowlands are areas of glacial deposition, and, appropriately, their area is diversified by such characteristics as the Valdai Hills of western Russia; by deposits of boulder clay, sands, and gravels; by glacial lakes; and because of the Pripet Marshes, a large unwell-drained place of Belarus and Ukraine. A https://asiaandworld95926.wikitron.com/1568078/new_step_by_step_map_for_asia_and_world