and Formentera in the Balearic archipelago. Mountains and rivers Mainland Spain is a rather mountainous landmass, dominated by high plateaus and mountain chains. After the Pyrenees, the main mountain ranges are the Cordillera Cantábrica (Cantabrian Range), Sistema Ibérico (Iberian System), Sistema Central (Central System), Montes de Toledo, Sierra Morena and the Sistema Bético (Baetic System) whose highest peak, the Mulhacén, located in Sierra Nevada, is the highest elevation in the Iberian Peninsula. The highest point in Spain is the Teide, a active volcano in the Canary Islands. The Meseta Central (often translated as 'Inner Plateau') is a vast plateau in the heart of peninsular Spain split in two by the Sistema Central. There are several major rivers in Spain such as the Tagus (Tajo), Ebro, Guadiana, Douro (Duero), Guadalquivir, Júcar, Segura, Turia and Minho (Miño). Alluvial plains are found along the coast, the largest of which is that of the Guadalquivir in Andalusia. Climate Three main climatic zones can be separated, according to geographical situation and orographic conditions: The Mediterranean climate, characterised by warm/hot and dry summers, is dominant in the peninsula. It has two varieties: Csa and Csb according to the Köppen climate classification. The Csa zone is associated to areas with hot summers. It is predominant in the Mediterranean and Southern Atlantic coast and inland throughout Andalusia, Extremadura and much, if not most, of the centre of the country. The Csa zone covers climatic zones with both warm and cool winters which are considered extremely different from each other at a local level, reason for which Köppen classification is often eschewed within Spain. Local climatic maps generally divide the Mediterranean zone (which covers most of the country) between warm-winter and cool-winter zones, rather than according to summer temperatures. The Csb zone has warm rather than hot summers, and extends to additional cool-winter areas not typically associated with a Mediterranean climate, such as much of central and northern-central of Spain (e.g. western Castile–León, northeastern Castilla-La Mancha and northern Madrid) and into much rainier areas (notably Galicia). Note areas with substantial summer rainfall such as Galicia are classed as oceanic. The semi-arid climate (BSk, BSh), is predominant in the southeastern quarter of the country, but is also widespread in other areas of Spain. It covers most of the Region of Murcia, southern Valencia and eastern Andalusia. Further to the north, it is predominant in the upper and mid reaches of