erosion, sand and land erosion on the baltic sea beaches of rügen and usedom

tree wall rock terrain geology cliff winter ruins plant snow nature soil mountain formation wood water branch coast trunk erosion sand land baltic sea beaches rügen usedom abortions blank hans dunes dune protection danger coastal landscape mecklenburg conservation waves sandy beach swell zingst demolition global warming climate change mecklenburgvorpommern level storms steep storm surges sky forest season blue