Alt Urgell is in the high mountains, the central sector of the Pyrenees, in the upper valley of the Segre, the river which flows down from Cerdanya and forms the backbone of the region. La Seu d'Urgell, the capital, is at the centre of the plain of La Seu, a broad depression at the confluence of the Segre and the Valira, which rises in Andorra. High peaks of the Pyrenees (Salòria, Munturull, etc.), the Cadí sierra, with its unmistakable silhouette to the south, and a series of side valleys, each with a character of its own. This was the original heart of the great county of Urgell, which expanded through the lands