Montblanc is the capital of the Catalan comarca Conca de Barberà, in the Spanish province of Tarragona. The Prades Mountains are located i…Montblanc is the capital of the Catalan comarca Conca de Barberà, in the Spanish province of Tarragona. The Prades Mountains are located in the vicinity of this town. The municipality comprises the settlements of Montblanc, La Guàrdia dels Prats, Lilla, Prenafeta, Rojals, and El Pinetell.