`el tolmo` huge granite mass 18 meters high and 500 tons

500 batholith berrocal big cliff climbing crags cretaceous curious erosion europe famous geological geology granite guadarrama high hiking hill huge iberian individual joints landscape large largest limestone madrid majestic mass massif mesozoic meters most mountain natural nature observation orogeny outdoor paleozoic pedriza ravine relief rock rocky scenic sediments sierra single sky stone summer tolmo tons tourism travel variscan view wall wilderness