sardinia. natural monuments. caves of san giovanni, near domusnovas in iglesiente region. southern entrance

2nd acqua action age archaeological area attested attraction been cave caves corrosive domusnovas entrances erosion extracted finds found frequented geological geology giovanni grotto homonymous iglesiente inside limestone marketed mediterranean metals millennium mining monte monument monuments mountain natural nature near nuragic originates outside precious prehistoric reach region rich river rock san sardinia secret small southern sulcis system throughout times today tourist two water way were where