The Swiss Plateau or Central Plateau (German: Schweizer Mittelland; French: plateau suisse; Italian: altopiano svizzero) constitutes one of the three major landscapes in Switzerland alongside the Jura Mountains and the Swiss Alps. It covers about 30% of the Swiss surface. It comprises the regions between the Jura and the Alps, partly flat but mostly hilly, and lies at an average height between 400 and 700 m AMSL. It is by far the most densely populated region of Switzerland, and the most important with respect to economy and transportation.