From the mountain range the Sierra de la Demanda runs northwards, into the heart of La Rioja, incorporating Monte San Lorenzo which, at , is the highest peak in the province. Other mountains include Sierra de Camero Viejo, Sierra de Camero Nuevo, Sierra de Cebollera, and Picos de Urbión. The Ebro is the main river passing through the community. Emerging from the narrow channel between the rocks of the Conchas de Haro, it reaches La Rioja, through which it runs for , before continuing its journey to the Mediterranean. In the Conchas de Haro the altitude of the river is and when it leaves the community, in the Sotos del Ebro Natural Reserve in Alfaro, it is high. The river therefore flows very quickly through La Rioja. Seven rivers descend rapidly towards the Ebro from the mountain range, which is why La Rioja is sometimes called: "Zone of the seven valleys". They are, from east to west, Alhama, Cidacos, Leza, Iregua, Najerilla, Oja and Tirón, although the headwaters of the Alhama and Cidacos originate in Soria and those of Najerilla-Neila and Tirón are from Burgos. Sometimes Linares (a tributary of Alhama) is added, grouping Tirón with its tributary, the Oja. All the rivers of these valleys form tributaries that go on to form many valleys in their own right, such as those of Linares, Ocon, Jubera, Tuerto, Brieva, Viniegras and San Millán. There is an almost unlimited number of grandiose canyons, quite splendid in nature, such as Aguas Buenas, Nieva, Manzanares, Ardancha, Navajún, Valderresa, Ollora, Tobia, San Martín and others. In the highlands oaks, beech and pine are grown. There are also thickets of juniper, boxwood, sloes, holly and cistus. Thyme, rosemary, common juniper, and holm oak are present. There are grand hillsides with fine pasture for livestock, cattle and sheep. In the lower areas there are oaks, olive and almond trees. Near the Ebro, in the plains, the land is used for cereal, sugar beet and potatoes, while the hills are covered with vast vineyards of the wine that has brought worldwide fame to this region.