La Paz is in the valleys of the Andes, close to the Eastern split of the Altiplano region. It is closer to such notable mountains as the Illimani (guardian of La Paz), Huayna Potosi, Mururata, and Illampu. On the Western side of the Altiplano divide, about an hour to the west of the La Paz, is the Sajama Volcano, the tallest mountain in Bolivia and ninth-tallest mountain in the Andes.