Basque relief units 2Versión en línea Exercise to prepare Selectivity question on Basque Relief units of the Basque Autonomous Community. There is a simpler version of this exercise. por Maite Fresnillo Beneitez 1 Coastal mountain ranges 2 Five Cities massif 3 Pre-coastal mountains 4 Mountains and valleys of middle courses 5 Cantabrico-Mediterraneo watershed 6 Plain 7 Araban central mountains 8 Treviño's basin 9 Western mountains and valleys 10 South-Eastern mountains and valleys 11 Toloño-Cantabria mountain range 12 Araban Rioja