summer landscape of letea sand dunes, danube delta

alder arboreal attraction biosphere black branches chilia climbing common creeper danube delta depressions dunes eagle elm english europe falcon fluvio footed forest graeca hasmac hasmacu heritage hoopoe horse horses insects ivy leafed letea liana lime mare maritime narrow nature oak oaks oldest periploca plants poplar red relief reservation reserve ridge roller romania sand secular silver site strips subtropical sulina tailed tourist tree tropical unesco ursinii vegetation vipera white wild world