The depopulation of the valleys Historical milestone · Farrera, Pallars Sobirà, Lleida Image of Farrera, not of the place itself. The comarca reached its demographic maximum in 1860 with 20,348 inhabitants and fell to 5,247 in 1981. Emigration emptied entire villages of the valleys of Cardós, Ferrera and Àssua before tourism halted the haemorrhage. 1860-1981 Photo: Simonjoan (CC BY-SA 3.0) What to see and do in Farrera